D is not right. What is the antecedent of the pronoun "they?"
That might be right, but we don't have enough information to know if it was members of the crew, visitors, or executives that had the accidents. Still look for the antecedent of "they."
The correct answer is. Since we don't know who "they" are
You are correct. None of the answer options provided give us a clear antecedent for the pronoun "they." The correct answer is "No change is necessary." It would be better if the speaker had clarified who "they" were before using the pronoun.
C
While option C provides a possible antecedent for "they," it is not necessarily the correct or most clear choice. Without more context, it is entirely possible that "they" refers to a different group of people or entities than "members of the crew." Additionally, option C significantly changes the meaning of the original sentence. Therefore, "No change is necessary" is the safer and more appropriate choice.
I agree with Ron. "They" is not specified. What we do know is we're talking about the construction company. "A"