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What is the correct answer?


In each of these questions, a sentence has been divided into four parts and marked a. b, c and d. One of these parts contains a mistake in grammar Idiom or syntax. Identify that part and mark it as the answer.

A. He declined the invitation

B. to participate in the meeting this evening

C. saying that he shall have an urgent business

D. he has to personally attend to

Please do not use chat terms. Example: avoid using "grt" instead of "great".