Identify the underlined word or phrase (A,B,C,D or E) that must be changed in order for the sentence to be correct.It is (A) most important that he (B) speaks (C) to the (D) dean before leaving (E) for his vacation.

`Call me if you have any problems regarding your work`. Here `regarding` is a/an- Option A: gerund , Option B: apposition , Option C: preposition, Option D: conjunction, correct answer is: preposition

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