Susan B. Anthony had a significant impact on the women's suffrage movement in the United States. While all of the options listed played a role in the movement, the most significant contribution made by Anthony was serving as president of the National American Woman Suffrage Association (NAWSA).
As president of NAWSA, Anthony worked tirelessly to advocate for women's right to vote. She traveled the country giving speeches, organizing rallies, and lobbying lawmakers to support women's suffrage. She also played a key role in the development of the suffrage movement's strategy, working closely with other leaders such as Elizabeth Cady Stanton.
In addition to her work with NAWSA, Anthony was also a key figure in the creation of the National Women's Suffrage Association, which was later renamed the National American Woman Suffrage Association. This organization played a crucial role in the eventual passage of the 19th Amendment, which granted women the right to vote.
While Anthony did not personally start a feminist newspaper, she did write and speak extensively about women's rights throughout her career, and her speeches and articles were widely circulated in the press. And while she did not organize the Seneca Falls meeting for women's rights single-handedly, she did play a key role in its planning and execution, and her work there helped to launch the modern women's suffrage movement in the United States.