Answered

The brain is most active during which portion of each sleep cycle?
A. the beginning of each sleep cycle
B. the middle of each sleep cycle
C. the end of each sleep cycle
D. The brain is not active during the sleep cycle.
Please select the best answer from the choices provided
A
В
C
D



Answer :

Answer:

B

Explanation:

The brain is most active during REM sleep, which occurs in the middle of each sleep cycle. So the answer is B.

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