Choose the strongest CONCLUSION supported by: 'Studies show that students who sleep less than six hours per night perform worse on memory tests than peers who sleep eight or more hours, even when controlling for time spent studying.'
AAll students should sleep at least eight hours.
BStudying is unimportant for memory.
CMore sleep guarantees better grades.
DSleep deprivation appears to be associated with poorer memory performance, independent of study time.
Answer & Solution
Correct answer: D. Sleep deprivation appears to be associated with poorer memory performance, independent of study time.
The passage shows an association between sleep duration and memory performance. (B) accurately reports this with appropriate hedging. (A) overstates causation and outcomes. (C) misreads. (D) is policy recommendation, not a conclusion.
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