Cody Is Visiting His Pen Pal in a Tropical,non-Industrialized Village

Cody is visiting his pen pal in a tropical,non-industrialized village.What is Cody likely to observe about the inhabitants of the village

A)  They are less likely than Canadians are to encourage co-sleeping. 
B)  They experience less REM sleep than is typical for Canadians. 
C)  They experience less slow-wave sleep than is typical for Canadians. 
D)  They are more likely than Canadians to take a nap each day.