Answer:
One rhetorical appeal in Susan B. Anthony's speech that is effective is ethos, or appeal to credibility. Anthony establishes her credibility as a speaker by highlighting her long-standing dedication to the cause of women's suffrage.
For example, in the opening of her speech, Anthony declares, "I come before you tonight as a believer in women's rights, as one who has borne witness to the struggles of our most noble women, and as one who has devoted her life to securing their rights." By presenting herself as someone who has dedicated her life to the cause of women's rights, Anthony establishes her credibility and authority on the subject. This allows her to appeal to the audience's sense of trust and respect for her, which helps her to make her case more effectively.
Throughout the speech, Anthony continues to emphasize her credibility by referencing her years of activism and her participation in key events in the women's suffrage movement. For example, she mentions that she has "been forty years a laborer for this cause," and that she was "with many others, present at the first Woman's Rights Convention ever held in this country." By highlighting her long-standing commitment to the cause of women's suffrage, Anthony further establishes her credibility and authority on the subject.
Overall, Anthony's use of ethos is effective in helping her make her case for women's suffrage because it establishes her as a credible and authoritative voice on the subject. By appealing to the audience's sense of trust and respect for her, she is able to make a persuasive case for why women should be granted the right to vote.