A Patient Asks the Nurse to Explain How Sleep Occurs

A patient asks the nurse to explain how sleep occurs.The nurse explains to the patient that the physiology of sleep is a complex process.However,in simple terms,what is the nurse's best response?

A) Circadian sleep rhythm controls sleep.
B) Sleep occurs when a person's basal metabolic rate falls.
C) Sleep is a dreaming process.
D) Interrelated mechanisms of the brain control wake and sleep cycles.

Correct Answer:

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