Question
Read each sentence to find out whether there is any
grammatical or idiomatic error in it. The error, if any, will be in one part of the sentence. The number of that part is the answer. (Ignore errors of punctuation, if any). Between the two (A) / proposals presented by (B) / the consulting firm, (C) / the latter is undoubtedly (D) / the most cost-effective option. (E)Solution
Rule: When comparing two things, we use the comparative degree, not the superlative. "The most" should be replaced with "the more" cost-effective option.
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