The greatest general problem with suburbs is .

A. the high population density
B. the lack of resources
C. that they spread environmental impact over a larger area
D. that they decrease water quality
E. the lack of nearby shopping

Option C.

The spread environmental impact over larger area.

Explanation:

Suburb or suburban is an area that is located outskirt a city which contain houses, schools, shops and there are few big buildings. They are located outside residential areas.

Social amenities are usually available in suburb i.e there is water, electricity e.t.c.

They spread environmental impact over a large area because there are concentration of amenities there and people tend to move in and out of it.