According to the U.S. Census Bureau, Philadelphia had a population density of 11,379.5 people per square mile in 2010, while the entire U.S. had a population density of 87.4 people per square mile. Which best explains the contrast between these two population densities?

While most areas of the U.S. have a high population density, the U.S. encompasses a vast amount of land.
The birthrate decreased throughout the U.S.
While some areas of the U.S. have a high population density, others must have extremely low population densities.
All of the above are correct.

Question

According to the U.S. Census Bureau, Philadelphia had a population density of 11,379.5 people per square mile in 2010, while the entire U.S. had a population density of 87.4 people per square mile. Which best explains the contrast between these two population densities?
 	
	While most areas of the U.S. have a high population density, the U.S. encompasses a vast amount of land.
	The birthrate decreased throughout the U.S.
	While some areas of the U.S. have a high population density, others must have extremely low population densities.
	All of the above are correct.

anonymous · Answer

i would honestly say that A is the best answer.

bringmetherain · Answer

That's what I believe. Though it could be all the above as well. But A makes the most sense.