Question

Young adults in their early twenties spend:

A. ten percent of their total sleep in stage 1.
B. 20 percent of their total sleep in stage 2.
C. half of their total sleep in stage 2.
D. half of their total sleep in stage 3.

Answer C

Answer 1

This detail I do not know for sure, but I would tend to choose along with you. Consult your text.