Professor Cimmerian is talking to her class about some of the characteristics of early humans. She has brought up the notion that sleep initially was engaged in largely as a function of safety and served to keep early peoples safe from predators. This describes the __________ theory of sleep.
A) microsleep
B) circadian
C) restorative
D) threshold

Question

Quizplus · Accepted Answer

The circadian theory of sleep relates to the idea that sleep patterns evolved as an adaptive response to environmental demands, including safety from predators. This theory emphasizes the role of sleep in aligning with the natural light-dark cycle, suggesting that being inactive during the night when many predators were active could have been a survival strategy for early humans.

Professor Cimmerian Is Talking to Her Class About Some of the Characteristics