extablish someone in office or mark the opening of a building ect.
A) It presents the main idea of the entire composition
It seems to me that, the thing wthat <span>the author has done in order to create a tone of seriousness in this piece is </span>a fact that he has used a long sentence with complex syntax to ask the reader to pay close attention.
Even though you haven't shared any options to choose the correct one, I bet this one will suit the question.
Regards.
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Answer:
I think the answer is choice B.
Explanation:
Choice B seems to fit the rest of the text better than choice A.