Question

select the correct answer. which of the following is the most common sleep disorder, characterized by difficulty falling or staying asleep? a. sleep apnea b. hypersomnia c. narcolepsy d. insomnia e. restless leg syndrome

Explanation:

Insomnia is the most common sleep disorder, characterized by persistent difficulty falling asleep or staying asleep, which matches the description in the question. Other options: Sleep apnea involves breathing pauses, hypersomnia is excessive sleepiness, narcolepsy causes sudden sleep attacks, and restless leg syndrome involves leg discomfort.

Answer:

D. Insomnia