Final answer:
Susan B. Anthony uses a rhetorical question in her speech to direct her audience's attention to the fundamental point that women, being persons, are citizens and therefore should not face discrimination or be denied the right to vote. C. The correct answer is option: C) To have the audience focus on the main point of her argument.
Step-by-step explanation:
In her speech, Susan B. Anthony poses a rhetorical question to focus her audience on the main argument of her address: the rights of women as citizens and the illegality of their disenfranchisement. Anthony's question, "Are women persons?" underscores the absurdity of denying women the right to vote if they are recognized as persons and, thus, as citizens.
By framing her statement as a question, she challenges her audience to acknowledge the truth of her assertion without directly stating it, engaging them and leading them to the inevitable conclusion that women's rights are being unjustly withheld.