Answer:
A. (first choice) People in the crowd become suspicious of one another.
Explanation:
A trochaic tetrameter is a meter in poetry. it refers to a line of four trochaic feet. The word tetrameter means that the poem has four trochees
A noun NAMES a thing: Alan, boy, Betsy, girl, Fido, dog, Democrats, men, Brownies, women, car, water, stick, computer, radio.
A pronoun stands for a noun, or points to a noun: you, me, he, him, she, her, they, them, it.