Communities, like people, must be at certain ____ before they can take action.?

New parents tell you it seems like their baby sleeps all the time. You reply that it is typical for newborns to sleep _____ hours per day

A) 9 to 10 B) 12 to 14 C) 16 to 18 D) 20 to 22

Contraction of the diaphragm results in its downward motion

Indicate whether the statement is true or false