Biology Forums - Study Force

Other than in downtown Johannesburg, the worst air pollution in the region in the year 2000 was in Soweto. The probable explanation is that in downtown Johannesburg ________, and in Soweto ________.
A) coal-fired electrical plants were the cause; automobile traffic in overcrowded areas was the problem
B) automobile traffic was the cause; automobile traffic was also the cause
C) automobile traffic was the cause; the burning of fuels in each home for heating, light, and cooking was a major contributor to indoor and outdoor air pollution
D) gasoline-powered electrical generators were the cause; trash incinerators were a problem
E) trash incinerators were a problem; gasoline-powered electrical generators were the cause

C