Under a new clean air proposal, the government has decided to tighten controls on the release of certain toxic chemicals, including benzene, formaldehyde, and other carcinogens, by chemical plants. The stated purpose of this proposal is to reduce cancers caused by air pollution. Yet, the chemical industry, rather than the government, is responsible for monitoring the implementation of the proposal. If the past actions of certain polluters in the chemical industry are any indication of future behavior, the net result of the new proposal will be an increase, rather than a decrease, in carcinogens released into the air.
The author is arguing that ____.
Answer is C.
A is wrong because the author was not absolute in his assertion that no chemical companies can be trusted. Based off the text, he suggests the industry as a whole, but not absolutely every single chemical company can not be trusted. B is suggested but that is only a part of the argument, not the main point. D is wrong, because the question does not ask what the author is implying; this is unstated and therefore would be an implication, or argument assumption that is outside of the text. Also, it makes an "always" assertion which should be a red flag for you. E is true but not the main argument, its just a set of facts that the author uses.
The answer is C because it summarizes the author's argument succinctly. C also expresses the argument clearly, without jumping to extremes; using neutral language, this answer choice is the best pick.