Before addressing the bold content, begin by identifying the conclusion of the author's argument, which is that "favorable exchange rates and trade conditions are less important to the Chinese economy than ever before". This position does not refute the bold statement, it merely indicates that "the country's manipulation of exchange rates..." is "less important... than before". Look for an answer choice that reflects this relationship.
Choice A is an extreme, half-right answer choice. The bold statement does introduce a judgment, so the first portion of the choice is correct. However, the argument does not oppose the statement, it only qualifies its importance.
Choice B is also a half-right trap answer choice, because the argument does suggest that "manipulation of exchange rates" is only partially responsible for "China's economic surge". However, this position is subjective and not an absolute fact. Additionally, the author does not indicate that the existence of the opinions of "many people" is partially untrue.
Choice C is a reversal of the prompt, since the bold statement does not support the main conclusion of the argument.
Choice D is a correct paraphrase of the relationship between the bold statement and the conclusion of the argument which states that "the country's manipulation of exchange rates..." is "less important... than before".
Choice E is a reversal of the prompt, since the conclusion does not explain the bold statement. Additionally, the bold statement is an opinion and not a finding.
The correct answer is choice D.