Which statement is true with regard to the duration of a self-generated sleep/activity cycle?
A) It is unreliable in most species, and dependably close to 24 hours only in primates.
B) It is longer if the organism is normally active in the dark.
C) It rarely varies from one individual to another, if at all.
D) It is highly consistent in a given individual in a given environment.

Question

Quizplus · Accepted Answer

The statement that is true with regard to the duration of a self-generated sleep/activity cycle is that it is highly consistent in a given individual in a given environment. This means that an individual's sleep/activity cycle will often remain the same as long as they remain in the same environment, even if they are placed in different lighting conditions or presented with different stimuli. This consistency is important for maintaining good sleep quality and overall health.

Which Statement Is True with Regard to the Duration of a Self-Generated