Multiple Choice
Marshall has been diagnosed with non-24-hour type circadian rhythm sleep-wake disorder.Which of the following is a likely symptom of Marshall's disorder?
A) He sleeps in three periods within 24 hours.
B) He experiences a free-running sleep-wake cycle that is not calibrated with the light-dark cycle of the day.
C) He falls asleep suddenly in the middle of the day.
D) He often cannot sleep for up to 48 hours.
Correct Answer:

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Correct Answer:
Verified
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