Multiple Choice
Katy is two months old, and her parents are exhausted. They take turns taking care of Katy while she is awake and they sleep while Katy sleeps. How often does Katy go through a complete sleep-wake cycle?
A) once every 2 hours
B) once every 4 hours
C) once every 6 hours
D) once every 8 hours
Correct Answer:
Verified
Correct Answer:
Verified
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