1.

What did the experiment conducted by Thomas Wehr prove?

A. It brought into question that sleeping for four consecutive hours is necessary.
B. It proved sleeping for eight consecutive hours is not a norm.
C. It established that when the nights are longer, people slept in two distinct chunks.
D. It proved that all people slept in two distinct chunks of four hours.
Answer» C. It established that when the nights are longer, people slept in two distinct chunks.


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