Answer:
Option B. Based on the passage from "Letter from Birmingham City Jail" the "real heroes of the South" are the protesters.
Step-by-step explanation:
In the excerpt from "Letter from Birmingham City Jail" Martin Luther King Jr expressed his disappointment in clergy men commending the Birmingham police force for keeping "order" and "preventing violence", when in fact it was the police force who was being extremely violent against black people. With his words, he is stating that the "real heroes" of the South, are not the police officers, but the protesters who were taking a stand against racism and injustice, in the form of nonviolent resistance.