EI
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
Cthe end of each sleep cycle
D. The brain is not active during the sleep cycle.
Please select the best answer from the choices provided
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During the first hour or so, your brain waves start to slow down, and throughout the other cycles it slows even more, therefore A seems like the most plausible answer.
