"To come all that way, rifle in hand, with two thousand people marching at my heels, and then to trail feebly away, having done nothing—no, that was impossible."

What purpose does the end phrase separated by the em dash serve in this sentence?
Edit: The correct answer is "The phrase is meant to simplify and clarify the author's first thought." I'm 100% sure got full points for it on quiz.
For points just answer with "C. The phrase is meant to simplify and clarify the author's first thought."

abater   ambary   ambery   baryta   baryte   bemata   betray   jarvey   ramate   ramjet

explanation:

those are all the possible words

answer is c.she believes the austrian owes her money.just took the test give

chapter i -- paris: september, 1792

a surging, seething, murmuring crowd of beings that are human only in name, for to the eye and ear they seem naught but savage creatures, animated by vile passions and by the lust of vengeance and of hate.

during the greater part of the day the guillotine had been kept busy at its ghastly work: all that france had boasted of in the past centuries, of ancient names, and blue blood, had paid toll to her desire for liberty and for fraternity.

hope this answer you: )!