4. Consciousness
The Stages of Sleep
Multiple Choice
Multiple ChoiceWhich of the following statements about REM sleep is true?
A
It is a much deeper, more restful kind of sleep than non-REM sleep.
B
It is the stage of sleep in which the heart beats the slowest.
C
It involves a lot of movement and thrashing as people have vivid dreams.
D
It is when 90 percent of dreams occur.
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