Jabjagotabhisavera wrote:
Although I agree with C being the best answer, but it changes the meaning conveyed by the original sentence. "harm rather than help" do not mean the same as "more harm than help".
The idea that the correct answer to a Sentence Correction question has to convey the meaning conveyed by the original version is a myth.
The correct answer is simply the answer that has no, or at least the fewest or least egregious, errors and issues.
Consider the following. If the original is
...
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