Ayo does regular exercise to stretch his mind.

Step 1: Analyze the question We need the word opposite in meaning to "stretch" in the sentence: "Ayo does regular exercise to stretch his mind." (The underlined word is "stretch".)

Step 2: Understand the concept Here, "stretch" is used figuratively. It means to extend, challenge, or widen the capacity of the mind. So we look for a word meaning to narrow, limit, or confine.

Step 3: Check each option

• A. enrich: to improve or make richer. This is similar to stretching the mind, not opposite.
• B. expand: to make larger or wider. This is a synonym of "stretch", not an antonym.
• C. restrict: to limit or confine. This is the opposite of stretching or widening.
• D. conscript: to enlist compulsorily into military service. It has no connection to the meaning of "stretch".

Step 4: Answer The opposite of "stretch" (extend or widen) is "restrict" (limit or confine).

Correct answer: C. restrict

Exam tip: In antonym questions, first find the meaning of the word in the sentence, then eliminate the synonyms. Options A and B are close in meaning to "stretch", so they are the traps. Usually the answer is the one that pulls in the opposite direction.