Is there a certain excerpt you're supposed to derive the answer from?
The answer would be A. became
My personal opinion to what the answers are:
Readers are uneasy with the narrator's growing instability,
Readers question the narrator's ability to act rationally,
Readers understand that the account given by the narrator is true.
I hope this helped, again, this is only my opinion to what I believe the answers are.
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The March on Washington for Jobs and Freedom was the largest civil rights protest in US history, and contributed to the successful implementation of the Civil Rights Act of 1964 and the Voting Rights Act of 1965.