In the following questions, a sentence is given with a highlighted phrase in it. The highlighted phrase may/may not be grammatically correct. Choose the best alternative to replace the highlighted phrase so as to make the sentence grammatically and contextually correct. If no replacement is required, choose option E as your answer. Researchers noted that patient recovery rates improved significant when the new daily therapy was administered under strict medical supervision.

·         Rule: An adjective describes a noun, whereas an adverb modifies a verb, an adjective, or another adverb. ·         Reasoning: The highlighted word tells us how the recovery rates "improved" (a verb). To describe a verb, we must use the adverb "significantly" , not the adjective "significant". ·         Elimination: o   (A) Incorrect because it uses "where" (place) instead of "when" (time context). o   (B) Incorrect because it keeps the adjective form "significant". o   (D) Incorrect because "more significant" is still an adjective phrase and cannot modify the verb "improved". o   (E) Incorrect because the original sentence uses the adjective "significant" to modify a verb.