Multiple Choice
During sleep,when are brain activity and muscle activity least?
A) Both brain activity and muscle activity are least during Stage 4 sleep.
B) Both brain activity and muscle activity are least during REM.
C) Brain activity is least during REM and muscle activity is least during Stage 4 sleep.
D) Brain activity is least during Stage 4 sleep and muscle activity is least during REM.
Correct Answer:

Verified
Correct Answer:
Verified
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