The Pyrenees mountain range.
I would say D as well. Animals need homes to live in... and they can't live in that area if the trees and plant life is always getting cut down.
Poor air and water quality, insufficient water availability, waste-disposal problems, and high energy consumption are exacerbated by the increasing population density and demands of urban environments. Strong city planning will be essential in managing these and other difficulties as the world's urban areas swell.
I will be different because more people will join the program and when the program expands the more people will be intrested and then the U.S has a more chance that people would want to join the army or military