Which explanation of why we sleep would predict that long-term sleep deprivation would cause cognitive declines and physical problems, such as an impaired immune system?
A) preserve and protect
B) activation-synthesis
C) restore and repair
D) problem-solving
Answer: C
Rationale: The restore and repair hypothesis is the idea that the body needs to restore energy levels and repair any wear and tear on the body from the day's activities. Unlike the preserve and protect hypothesis, the restore and repair hypothesis predicts that physical "wear and tear" would accumulate if a person was not allowed to sleep. The activation-synthesis and problem-solving hypotheses are theories of dreaming, and do not predict physical or cognitive decline will result from sleep deprivation.
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