Series route: This guide belongs to the complete PSLE Learner’s Guide volume directory. The original PSLE Learning Guide supplies the wider English, Mathematics and Science route, while PSLE English provide verified subject-specific continuation.
Find your route through this guide
This volume solves one precise learner problem: the learner treats adapt and adopt as spelling variants because both can describe a response to something new, even though one names adjustment and the other names acceptance or taking up. The aim is not to memorise a slogan. It is to understand the mechanism well enough to recognise the idea when the wording, numbers, diagram or context changes. A Primary 6 learner should be able to explain the decision, perform it under time pressure, and detect a tempting answer that only looks familiar.
- Understand the mechanism before memorising a form.
- Study the worked examples and compare near-misses.
- Repair common misconceptions with targeted tests.
- Complete graded independent practice before reading the answers.
- Use delayed transfer and examination control to make the skill durable.
- Use the parent and tutor notes only after the learner has attempted the work.
The problem beneath the mistake
Adapt and adopt can appear in the same story, which is why sound alone is unreliable. A class may adopt a new study method, then adapt the method to fit a shorter revision week.
Adapt answers the question “What changed to fit?” A plant may adapt to dry conditions over generations, a learner may adapt a plan after receiving new information, and a writer may adapt a story for the stage.
Adopt answers “What was chosen or taken up?” A team may adopt a rule, a family may adopt a routine, and a learner may adopt a more careful checking method.
The verbs also differ in their common structures. People adapt to conditions, adapt something for a purpose, or adapt something from a source. They adopt a policy, strategy, attitude, custom or responsibility.
A reliable choice therefore follows meaning, grammar and object together. First identify whether adjustment or acceptance is happening; then confirm that the surrounding preposition and noun fit the verb.
Core decision: Use adapt when a person or thing changes to suit new conditions, or when someone modifies material for a new purpose; use adopt when someone chooses, accepts or begins to use an idea, method, practice, role or responsibility.
A useful rule has three parts: a trigger, an operation and a check. The trigger tells you when the rule applies. The operation tells you what to do. The check tells you whether the result still matches the meaning of the question. Learners who remember only the operation often apply it in the wrong place; learners who remember only an example often freeze when the surface details change.
Mechanism: why the rule works
1. Test for adjustment
Adapt involves change so that a person, plan, text or system works under new conditions.
Diagnostic question: What is being modified, and what new condition must it fit? Reliable response: Choose adapt when adjustment is central.
2. Test for acceptance
Adopt involves choosing, accepting or beginning to use something.
Diagnostic question: What idea, rule, method or role is being taken up? Reliable response: Choose adopt when selection is central.
3. Read the preposition
Adapt commonly appears with to, for and from, each showing a different relationship.
Diagnostic question: Does the phrase name a condition, purpose or source? Reliable response: Use the preposition as supporting evidence.
4. Inspect the object
A policy, stance or routine is commonly adopted; a plan, text or behaviour may be adapted.
Diagnostic question: Can the object logically be chosen, changed or both? Reliable response: Use context to decide the intended action.
5. Allow a two-step sequence
A person can first adopt something and later adapt it.
Diagnostic question: Does the sentence describe selection before modification? Reliable response: Keep the two actions separate.
6. Use a substitution check
Change or modify tests adapt; choose, accept or take up tests adopt.
Diagnostic question: Which plain verb preserves the meaning? Reliable response: Substitute, reread and confirm grammar.
Worked examples: make the decision visible
Do not race through these examples. Before reading each explanation, name the evidence that matters and the information that does not. Then compare the correct route with the tempting route. That comparison is where the transferable learning sits.
Worked example 1: New timetable
Task. Complete: “The class decided to ___ a new revision timetable.”
Reasoning. The timetable is being chosen for use. The controlling idea is whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility. This prevents a learner from choosing an answer merely because one word, number or observation resembles a remembered example.
Answer. adopt
Independent check. Replace with take up. A good check approaches the conclusion from a different direction. Repeating the same steps more slowly may repeat the same hidden assumption.
Worked example 2: Shorter week
Task. Complete: “They had to ___ the timetable for a four-day week.”
Reasoning. An existing timetable is modified to fit a new condition. The controlling idea is whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility. This prevents a learner from choosing an answer merely because one word, number or observation resembles a remembered example.
Answer. adapt
Independent check. Replace with modify. A good check approaches the conclusion from a different direction. Repeating the same steps more slowly may repeat the same hidden assumption.
Worked example 3: Environment
Task. Complete: “Animals must ___ to changes in their habitat.”
Reasoning. The subject changes or adjusts in response to conditions. The controlling idea is whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility. This prevents a learner from choosing an answer merely because one word, number or observation resembles a remembered example.
Answer. adapt
Independent check. The to-phrase names the new condition. A good check approaches the conclusion from a different direction. Repeating the same steps more slowly may repeat the same hidden assumption.
Worked example 4: School policy
Task. Complete: “The school may ___ a clearer labelling policy.”
Reasoning. A policy is selected and put into use. The controlling idea is whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility. This prevents a learner from choosing an answer merely because one word, number or observation resembles a remembered example.
Answer. adopt
Independent check. Nothing says the policy itself was modified. A good check approaches the conclusion from a different direction. Repeating the same steps more slowly may repeat the same hidden assumption.
Worked example 5: Stage version
Task. Complete: “The novel was ___ for the stage.”
Reasoning. The source material was changed for a new medium. The controlling idea is whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility. This prevents a learner from choosing an answer merely because one word, number or observation resembles a remembered example.
Answer. adapted
Independent check. The for-phrase names the purpose. A good check approaches the conclusion from a different direction. Repeating the same steps more slowly may repeat the same hidden assumption.
Worked example 6: Learning strategy
Task. Interpret: “Mira adopted the strategy and adapted it to her schedule.”
Reasoning. She first chose the strategy, then changed it to fit her circumstances. The controlling idea is whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility. This prevents a learner from choosing an answer merely because one word, number or observation resembles a remembered example.
Answer. Both verbs are correct because they name different steps.
Independent check. Paraphrase each verb separately. A good check approaches the conclusion from a different direction. Repeating the same steps more slowly may repeat the same hidden assumption.
Worked example 7: Attitude
Task. Complete: “He ___ a calmer attitude during group work.”
Reasoning. An attitude is taken up as a chosen way of behaving. The controlling idea is whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility. This prevents a learner from choosing an answer merely because one word, number or observation resembles a remembered example.
Answer. adopted
Independent check. Changed a calmer attitude would not preserve the meaning. A good check approaches the conclusion from a different direction. Repeating the same steps more slowly may repeat the same hidden assumption.
Worked example 8: Source text
Task. Complete: “The exercise was ___ from an older puzzle.”
Reasoning. The material was changed from a source for a new use. The controlling idea is whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility. This prevents a learner from choosing an answer merely because one word, number or observation resembles a remembered example.
Answer. adapted
Independent check. From identifies the source relationship. A good check approaches the conclusion from a different direction. Repeating the same steps more slowly may repeat the same hidden assumption.
Deepening lab: compare cases, conditions and limits
A method becomes independent when you can say where it applies, where it stops and which change would alter the conclusion. The cases below deliberately vary one structural feature at a time. For each case, pause before the analysis and predict whether the core rule remains available. Then name the exact condition that controls the decision. This is harder than repeating a worked solution, but it is also closer to what an unfamiliar examination item demands.
Deepening case 1: Adapt to
Case. A learner becomes comfortable with a new seating arrangement.
Analysis. The person adjusts to conditions. Notice that the answer depends on whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility; changing a decorative detail would not be enough to change the reasoning.
Challenge. Write a sentence using adapt to. State the conclusion in one precise sentence, then add one sentence that names the evidence or relationship that makes it valid.
Deepening case 2: Adapt for
Case. A long explanation is shortened for younger readers.
Analysis. The material is modified for a purpose or audience. Notice that the answer depends on whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility; changing a decorative detail would not be enough to change the reasoning.
Challenge. State what was changed. State the conclusion in one precise sentence, then add one sentence that names the evidence or relationship that makes it valid.
Deepening case 3: Adapt from
Case. A play is based on a novel but altered for performance.
Analysis. From names the source of the adaptation. Notice that the answer depends on whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility; changing a decorative detail would not be enough to change the reasoning.
Challenge. Distinguish source from purpose. State the conclusion in one precise sentence, then add one sentence that names the evidence or relationship that makes it valid.
Deepening case 4: Adopt a method
Case. A learner chooses estimation as a regular checking habit.
Analysis. The method is taken up for use. Notice that the answer depends on whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility; changing a decorative detail would not be enough to change the reasoning.
Challenge. Explain why adapt would change the claim. State the conclusion in one precise sentence, then add one sentence that names the evidence or relationship that makes it valid.
Deepening case 5: Adopt a rule
Case. A club votes to use a new safety rule.
Analysis. Collective acceptance is the key event. Notice that the answer depends on whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility; changing a decorative detail would not be enough to change the reasoning.
Challenge. Name evidence that the rule is now used. State the conclusion in one precise sentence, then add one sentence that names the evidence or relationship that makes it valid.
Deepening case 6: Adapt a rule
Case. A general rule is modified for a special setting.
Analysis. Here the rule already exists and is changed. Notice that the answer depends on whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility; changing a decorative detail would not be enough to change the reasoning.
Challenge. State the new condition. State the conclusion in one precise sentence, then add one sentence that names the evidence or relationship that makes it valid.
Deepening case 7: Adopt then adapt
Case. A class chooses a note-taking system and modifies its symbols.
Analysis. Selection precedes adjustment. Notice that the answer depends on whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility; changing a decorative detail would not be enough to change the reasoning.
Challenge. Label the two verbs. State the conclusion in one precise sentence, then add one sentence that names the evidence or relationship that makes it valid.
Deepening case 8: Technology
Case. A user adapts a keyboard layout to improve access.
Analysis. The existing layout changes to fit a need. Notice that the answer depends on whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility; changing a decorative detail would not be enough to change the reasoning.
Challenge. Contrast with adopting new software. State the conclusion in one precise sentence, then add one sentence that names the evidence or relationship that makes it valid.
Deepening case 9: Composition
Case. A character adopts a brave manner but adapts the plan when rain begins.
Analysis. The first action is a chosen attitude; the second is adjustment. Notice that the answer depends on whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility; changing a decorative detail would not be enough to change the reasoning.
Challenge. Show both actions through evidence. State the conclusion in one precise sentence, then add one sentence that names the evidence or relationship that makes it valid.
Deepening case 10: Science context
Case. A population may become adapted to an environment across generations.
Analysis. Everyday and scientific uses share the idea of fit, but scientific explanation needs accurate mechanisms. Notice that the answer depends on whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility; changing a decorative detail would not be enough to change the reasoning.
Challenge. Avoid claiming that an individual chooses inherited traits. State the conclusion in one precise sentence, then add one sentence that names the evidence or relationship that makes it valid.
Deepening case 11: Mathematics context
Case. A learner adapts a known method for a different number pattern.
Analysis. The method is modified while its logic is preserved. Notice that the answer depends on whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility; changing a decorative detail would not be enough to change the reasoning.
Challenge. State the preserved relationship. State the conclusion in one precise sentence, then add one sentence that names the evidence or relationship that makes it valid.
Deepening case 12: Adopt a position
Case. A speaker adopts a position in a debate.
Analysis. The person accepts a stance. Notice that the answer depends on whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility; changing a decorative detail would not be enough to change the reasoning.
Challenge. Give the supporting reason. State the conclusion in one precise sentence, then add one sentence that names the evidence or relationship that makes it valid.
Deepening case 13: Physical posture
Case. A runner adopts a stable stance before starting.
Analysis. Adopt can mean assume a position. Notice that the answer depends on whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility; changing a decorative detail would not be enough to change the reasoning.
Challenge. Contrast with adapting the stance to wet ground. State the conclusion in one precise sentence, then add one sentence that names the evidence or relationship that makes it valid.
Deepening case 14: Object ambiguity
Case. A plan may be adopted or adapted.
Analysis. The verb changes whether the plan is chosen or modified. Notice that the answer depends on whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility; changing a decorative detail would not be enough to change the reasoning.
Challenge. Write a minimal pair. State the conclusion in one precise sentence, then add one sentence that names the evidence or relationship that makes it valid.
Deepening case 15: Routine ambiguity
Case. A routine can first be adopted and later adapted.
Analysis. Chronology resolves the apparent conflict. Notice that the answer depends on whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility; changing a decorative detail would not be enough to change the reasoning.
Challenge. Add time markers. State the conclusion in one precise sentence, then add one sentence that names the evidence or relationship that makes it valid.
Deepening case 16: Passive form
Case. The proposal was adopted by the committee.
Analysis. The passive sentence still means accepted. Notice that the answer depends on whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility; changing a decorative detail would not be enough to change the reasoning.
Challenge. Change it to adapted and explain the new meaning. State the conclusion in one precise sentence, then add one sentence that names the evidence or relationship that makes it valid.
Deepening case 17: Noun forms
Case. Adoption names taking up; adaptation names adjustment.
Analysis. Word families preserve the core distinction. Notice that the answer depends on whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility; changing a decorative detail would not be enough to change the reasoning.
Challenge. Use both nouns in one sentence. State the conclusion in one precise sentence, then add one sentence that names the evidence or relationship that makes it valid.
Deepening case 18: Adopt responsibility
Case. A leader accepts responsibility for a task.
Analysis. Taking up a duty fits adopt. Notice that the answer depends on whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility; changing a decorative detail would not be enough to change the reasoning.
Challenge. Explain why modify is wrong. State the conclusion in one precise sentence, then add one sentence that names the evidence or relationship that makes it valid.
Deepening case 19: Adapt behaviour
Case. A learner changes speaking volume for a library.
Analysis. Behaviour is adjusted to context. Notice that the answer depends on whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility; changing a decorative detail would not be enough to change the reasoning.
Challenge. Name the environmental cue. State the conclusion in one precise sentence, then add one sentence that names the evidence or relationship that makes it valid.
Deepening case 20: Context override
Case. Common collocations help but do not decide alone.
Analysis. Plans, rules and methods can be either chosen or changed. Notice that the answer depends on whether the sentence describes changing an existing thing or taking up something as one’s chosen practice, method, position or responsibility; changing a decorative detail would not be enough to change the reasoning.
Challenge. Use the actual event as the final test. State the conclusion in one precise sentence, then add one sentence that names the evidence or relationship that makes it valid.
Finish the lab with a blank-page recall. Write the rule, its conditions, one confirming example, one near-miss and one independent check from memory. Compare that page with the article only after finishing. If the rule is correct but the condition is missing, the learning is not yet safe: an overgeneralised rule can produce confident errors. If the condition is correct but no example can be generated, practise construction rather than rereading.
Common misconceptions and targeted repairs
Misconception 1: They are spelling variants
What the learner may think. Either verb can be used if the sentence concerns something new.
Why it fails. Newness does not identify whether something is chosen or modified. The error feels efficient because it removes a decision, but it also removes the evidence boundary that makes the answer valid.
Targeted repair. Ask acceptance or adjustment. Use this short test immediately: Was it taken up or changed?
Misconception 2: Adapt always needs to
What the learner may think. Adapt cannot take a direct object.
Why it fails. Writers adapt a plan, text, method or device, and may adapt it for a purpose. The error feels efficient because it removes a decision, but it also removes the evidence boundary that makes the answer valid.
Targeted repair. Check the sentence pattern. Use this short test immediately: What is being modified?
Misconception 3: Adopt means copy exactly
What the learner may think. Anything adopted must remain unchanged.
Why it fails. A practice can be adopted and later adapted. The error feels efficient because it removes a decision, but it also removes the evidence boundary that makes the answer valid.
Targeted repair. Separate the time steps. Use this short test immediately: What happened first?
Misconception 4: Objects fix the verb
What the learner may think. A rule is always adopted and a plan always adapted.
Why it fails. Many objects support both meanings. The error feels efficient because it removes a decision, but it also removes the evidence boundary that makes the answer valid.
Targeted repair. Use the described action. Use this short test immediately: Selection or modification?
Misconception 5: Biological adaptation is deliberate
What the learner may think. An organism chooses to adapt inherited traits.
Why it fails. Scientific explanations distinguish individual adjustment from population-level inherited change. The error feels efficient because it removes a decision, but it also removes the evidence boundary that makes the answer valid.
Targeted repair. Use precise evidence and time scale. Use this short test immediately: Who changes, and how?
Misconception 6: Longer wording is safer
What the learner may think. Use adopt and adapt together whenever unsure.
Why it fails. Adding both can create a false two-step claim. The error feels efficient because it removes a decision, but it also removes the evidence boundary that makes the answer valid.
Targeted repair. Choose only the action supported. Use this short test immediately: Does evidence show both?
Graded independent practice
Attempt each item without looking ahead. Write one line that identifies the controlling evidence before writing the final answer. Items 1–3 check recognition, 4–7 require explanation, and the later items change the surface form so that memory alone is insufficient.
Practice 1: Choice
Question. Choose: “We will ___ the new checking routine next week.”
Explained answer. adopt
Why this answer earns trust. The routine is being selected for use. Transfer variation: Replace with take up.
Practice 2: Adjustment
Question. Choose: “We will ___ the routine when the timetable changes.”
Explained answer. adapt
Why this answer earns trust. The existing routine will be modified. Transfer variation: Name the new condition.
Practice 3: Preposition
Question. Complete: “The pupils adapted ___ the quieter environment.”
Explained answer. to
Why this answer earns trust. To introduces the condition they adjusted to. Transfer variation: Write an adapt for sentence.
Practice 4: Source
Question. Complete: “The performance was adapted ___ a folktale.”
Explained answer. from
Why this answer earns trust. From identifies the source. Transfer variation: Name the new medium.
Practice 5: Minimal pair
Question. Explain “adopt a plan” versus “adapt a plan.”
Explained answer. Adopt means choose the plan; adapt means modify it.
Why this answer earns trust. The same object supports different actions. Transfer variation: Add time markers.
Practice 6: Editing
Question. Correct: “The committee adapted the policy and began using it unchanged.”
Explained answer. The committee adopted the policy and began using it unchanged.
Why this answer earns trust. The evidence shows acceptance, not modification. Transfer variation: Change the evidence so adapted fits.
Practice 7: Two-step
Question. Complete both verbs: “After we ___ the method, we ___ it for younger pupils.”
Explained answer. adopted; adapted
Why this answer earns trust. Choice occurs before modification. Transfer variation: Paraphrase each step.
Practice 8: Composition
Question. Write two actions that prove a character adapted to a new school.
Explained answer. The actions must show changed behaviour in response to the setting.
Why this answer earns trust. Evidence earns the verb. Transfer variation: Contrast with adopting a school rule.
Practice 9: Rule recall
Question. State the distinction without examples.
Explained answer. Adapt means change to fit; adopt means choose, accept or take up.
Why this answer earns trust. The definitions remain portable. Transfer variation: Recall after two days.
Practice 10: Transfer
Question. Sort six sentences containing plans, policies and methods.
Explained answer. Each choice is justified by the event, not the noun alone.
Why this answer earns trust. Ambiguous objects require context. Transfer variation: Write one deliberately ambiguous sentence.
Delayed transfer: prove that the learning lasts
Transfer test 1: Substitution set
Test twenty sentences with modify/change and choose/accept. Do this after a delay, without rereading the worked examples. The purpose is to test retrieval and decision-making, not immediate imitation.
Success criterion. Every choice preserves the intended action and sentence pattern. If the criterion is not met, return to the smallest missing decision rather than repeating the entire chapter.
Transfer test 2: Paired narrative
Write a short scene in which a learner adopts a method and later adapts it. Do this after a delay, without rereading the worked examples. The purpose is to test retrieval and decision-making, not immediate imitation.
Success criterion. Chronology and evidence make both verbs necessary. If the criterion is not met, return to the smallest missing decision rather than repeating the entire chapter.
Transfer test 3: Delayed editing
After a week, edit a passage using adapt, adopt, adaptation and adoption. Do this after a delay, without rereading the worked examples. The purpose is to test retrieval and decision-making, not immediate imitation.
Success criterion. Each word family matches adjustment or acceptance exactly. If the criterion is not met, return to the smallest missing decision rather than repeating the entire chapter.
Examination control
1. Read the job before the story. Underline the command and the noun it governs. “Explain the change,” “state the word,” “find the fraction” and “identify the evidence” are different jobs even when the surrounding context is similar.
2. Separate given information from remembered information. Use only the facts supplied for the current task plus secure subject knowledge. Do not let a previous question, a familiar worksheet or an expected pattern silently become new evidence.
3. Write enough working to expose the decision. A marker or teacher should be able to see the relationship that justifies the answer. Extra sentences are not automatically stronger; the strongest working is concise, relevant and checkable.
4. Reserve a different-route check. For language, read the sentence for meaning and grammar. For mathematics, estimate or reverse the operation. For science, check the claim against the stated observation and a conservation or fair-test principle.
5. Stop when the requested job is complete. Unrequested speculation can contradict a correct answer. Add detail only when it explains the mechanism or satisfies another explicit part of the question.
Under time pressure, use a compact four-part margin routine: trigger → evidence → operation → check. Trigger names the feature that activates the method. Evidence identifies the exact words, values or observations allowed. Operation performs the language, mathematical or scientific step. Check asks whether the final statement answers the requested job, preserves units or referents, and avoids a stronger claim than the evidence supports.
A compact error log
After practice, do not record only “careless mistake.” Name the broken decision. Useful labels include trigger missed, evidence imported, relationship reversed, referent lost, unit dropped, operation correct but job wrong, and check repeated the same route. Add one prevention cue beside the label. A short accurate log is more useful than a long emotional account because it tells the learner what to do on the next item.
Review the log after two days and again after a week. Reattempt only one or two representative items first. If the method transfers, move to a mixed set. If it fails, repair the exact link between trigger and operation. This spacing matters because a solution can feel obvious while it is still visible and disappear when the page is closed.
Notes for parents and tutors
Ask “Did it change, or did we choose it?” before discussing spelling. The meaning contrast is easier to retrieve.
Use the same object in paired sentences—adopt a plan, adapt a plan—so the learner sees that context controls the verb.
In writing, require an observable action that proves adjustment or acceptance instead of using the verb as an unsupported label.
The adult’s most useful question is not “Why were you careless?” but “Which decision did the evidence require?” Ask the learner to point to the controlling word, value, relationship or observation. If the learner can explain that link, reduce support. If the learner cannot, model one example and then change the surface details for the next attempt.
Frequently asked questions
What does adapt mean?
To change or adjust so that something fits new conditions, a purpose or an audience.
What does adopt mean?
To choose, accept, take up or begin using something.
Can I adopt and adapt the same method?
Yes. You can choose it first and modify it later.
Is “adapt to” always correct?
It is common for adjusting to conditions, but adapt can also take an object or appear with for and from.
What is the quickest test?
Try change or modify for adapt, and choose or take up for adopt.
Which noun forms match?
Adaptation is adjustment; adoption is taking up or accepting.
Next routes
Return to the complete volume directory to locate the series, use the original PSLE Learning Guide for the foundation route, and continue through PSLE English for verified subject guidance. The next useful task is a mixed set in which this idea is sometimes relevant and sometimes irrelevant; that is the point at which a learner must choose, not merely copy.