Multiple Choice
Circadian rhythm refers to
A) the pattern of emotional ups and downs we routinely experience.
B) a pattern of biological functioning that occurs on a roughly 24-hour cycle.
C) the experience of sleep apnea following a lengthy transoceanic flight.
D) the cycle of four distinct stages that we experience during a normal night's sleep.
Correct Answer:

Verified
Correct Answer:
Verified
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