A rise in automobile traffic by commuters causes an increase in photochemical snog in a city City planners are looking into improving the city's bus systern to help reduce the amount of automobile exhaust produced by people who cornmute One person states, "The bus system will be expensive to develop, but it will improve the overall health of our city's human population Which of the following does this statement represent?
A. A risk assessment
B. A dose-response analysis
C. A cost benefit analysis
D. An epidemiological study