Multiple Choice
Several large-scale studies documented the sleep patterns and health of healthy volunteers for several years.They found that people who slept __________ hours per night tended to live the longest.
A) between 5 and 7
B) 8 or more
C) 9 or more
D) 10 or more
E) between 3 and 5
Correct Answer:

Verified
Correct Answer:
Verified
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