The fact that most birds and mammals sleep even if it puts them at risk suggests that
A) sleep serves an important physiological function.
B) sleep serves a cognitive function.
C) people should sleep as much as they can.
D) all of the above
E) both B and C

Question

Quizplus · Accepted Answer

The fact that most birds and mammals sleep even if it puts them at risk suggests that sleep serves an important physiological function, which is necessary for their survival and well-being. Choice B is incorrect because although sleep may serve some cognitive functions, such as memory consolidation, it is primarily a biological process. Choice C is not supported by the given information. Choice D is incorrect because only A is indicated by the given information. Choice E is also incorrect because only A is supported by the given information.

The Fact That Most Birds and Mammals Sleep Even If