Question

what is the 24 - hour natural cycle of animal behavior and physiology called?
a. jet lag
b. rem behavior
c. circadian rhythm
d. lucid dreaming

Explanation:

The 24 - hour natural cycle of animal behavior and physiology is a well - known biological concept. Jet lag is a disruption of the body's internal clock due to travel. REM behavior is related to rapid eye movement during sleep. Lucid dreaming is a state during sleep where the dreamer is aware they are dreaming. Circadian rhythm is the 24 - hour internal biological clock that regulates many physiological and behavioral processes in animals.

Answer:

C. Circadian rhythm