In 1958 trash collection programs were established, and backyard incinerators were banned in the hope of reducing smog. However, it was estimated that massive amounts of gasoline were evaporating from storage tanks, fuel pump nozzles, and delivery trucks. This was also considered a serious contributor to smog, and over the next 20 years several new rules, and several new devices, were put in place to alleviate it. Despite the changes, there was still a great deal of photochemical smog. The major remaining problem was .
A) the influx of new manufacturing, with new chemicals
B) too many coal -fired power plants along the coast
C) backyard trash incineration
D) insufficient city funding to improve waste dumps
E) the large distances driven daily by solitary commuters

Question

Quizplus · Accepted Answer

The passage discusses efforts to reduce smog through banning backyard incinerators and controlling gasoline evaporation, but mentions that photochemical smog remained a significant issue. The reference to gasoline evaporation hints at the role of vehicles in contributing to smog, making the large distances driven daily by solitary commuters (E) the most plausible major remaining problem not addressed by the measures mentioned.

In 1958 Trash Collection Programs Were Established, and Backyard Incinerators