Urban sprawl is a result of people moving away from urban sprawl is a result of people moving away from city centers natural resources suburbs current residences rural communities

I believe the answer is: city centers.
Urban sprawl refers to the expansion of human population form high density areas to the low desnsity area.
Which means that during urban sprawl, population moved away from city centers to the suburban area or small villages.

D is the correct answer.

The State Department is a Federal Executive Department and as such, travel warnings from the State Department come from the Executive Branch.