Answer:
Julius Caesar, by William Shakespeare (Act III, scene II)
The effect of Antony's speech on the citizens is:
B. The citizens begin to question Brutus's opinion of Caesar.
Explanation:
Mark Antony figuratively refuted Brutus' claim that he killed Caesar as a savior of Rome and her citizens. The opposite seems to be the case. It was the greed, power-hunger, and inordinate ambition of Marcus Brutus that proved to be the main reasons that he killed Caesar. In his famous speech, Mark Antony reminded the Romans that Caesar was a man of honor and not a tyrant, who was not overly ambitious, having refused the crown thrice, unlike his ungrateful and treacherous conspirators.