Why is there such a low population in the area of the western United States around the black arrow (on the population distribution map)?

A. The area is not near a major water body.

B. The area is good for farming.

C. The area is mountainous.

D. The area is not good for farming.

Incorrect. It is true the area is not near a large body of water, but that is not the best answer to explain the low population.

Incorrect. This part of the country is not known for lots of farming.

Correct! Comparing the maps you should see that the area around the black arrow is the same area that the Rocky Mountains run through.

Incorrect. Areas that are not good for farming can have larger populations.