What do doctors recommend for teenagers?
Many students believe that cutting down on sleep gives them extra time to study. Research suggests the opposite. During sleep the brain sorts the information collected during the day and stores the important parts in long-term memory. A student who stays up all night before an exam may remember less than one who goes to bed at a normal hour. Sleep also affects mood: tired people become irritable more quickly and find it harder to concentrate. Doctors recommend that teenagers get between eight and ten hours of sleep each night, although surveys show that few of them reach this number on school days.
Answer and explanation
Correct answer: C. Between eight and ten hours of sleep a night
- Step 1: The passage gives eight to ten hours as the doctors' recommendation for teenagers.
Answer
Between eight and ten hours of sleep a night.
Why not the others: The passage does not say any of the other three.
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