Read the excerpt:

Students often stay up late before an exam, believing that extra hours of study will help. Research suggests the opposite. During deep sleep the brain replays and strengthens what was learned during the day, moving new information into long-term memory. In one study, students who slept after learning a list of words remembered far more of them the next morning than students who stayed awake for the same length of time.

In the sentence "Research suggests the opposite", what idea does "the opposite" refer to?

Answer and explanation

Correct answer: A. That staying up late to study does not help

  1. Step 1: The first sentence describes the belief that extra hours of late study will help; "the opposite" is that this does not help. Answer: That staying up late to study does not help. Why not the others: The excerpt does not say whether students enjoy late study, it makes no suggestion about exam times, and it argues that sleep is important, not that it is unnecessary.

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