carcass wrote:
Which of the following, if true, provides the most logical completion of the passage below?
Cars fueled by methanol have a much lower level of emissions of pollutants such as carbon monoxide and environmentally harmful hydrocarbons than gasoline-fueled cars do. Methanol fuel does produce somewhat higher formaldehyde emissions than gasoline does. Nevertheless, a methanol-powered car actually produces less atmospheric formaldehyde pollution than a comparable gasoline-powered car, because _______.
(A) compared to carbon monoxide and some hydrocarbons produced by gasoline-powered cars, formaldehyde pollution is not a serious threat to the environment
(B) the technical difficulties involved in mass-producing methanol-powered cars will prevent them from seriously competing with gasoline-powered cars for several years
(C) gasoline-powered cars are required by United States law to be equipped with catalytic converters that reduce emissions of many pollutants
(D) measuring a car's emissions is generally an accurate method of assessing that car's contribution to atmospheric pollution
(E) most formaldehyde pollution generated by gasoline-powered cars results from the photochemical conversion of hydrocarbon emissions into formaldehyde in the atmosphere
Kudos for the right answer and explanation
Kudo for the author of the post.
The conclusion of this agreement in the last sentence focuses on "methanol-powered car actually produces less
atmospheric formaldehyde pollution", therefore we need to focus only on the
atmospheric formaldehyde pollution by the Gasoline based cars. Any option that is not speaking about this
atmospheric formaldehyde pollution can be eliminated.
A: Talks about the threat of "carbon monoxide and some hydrocarbons produced by gasoline-powered cars". So can be eliminated
B: We are speaking about pollution per car and not the overall amount of pollution caused by all the cars. So incorrect
C: Not speaking about "atmospheric formaldehyde pollution". So can be eliminated
D: Out of scope since measurement is not talked of in the problem
E:
Correct since this explains why Gasoline cars produce more atmospheric formaldehyde pollution despite producing less formaldehyde than Methanol based carsSo IMO E is the correct answer