Who were the primary leaders of the suffrage movement for women's voting rights?

The correct choice highlights the primary leaders who were instrumental in advocating for women's voting rights during the suffrage movement in the United States. Elizabeth Cady Stanton, Alice Paul, and Susan B. Anthony are all key figures known for their relentless efforts in promoting women's suffrage.

Elizabeth Cady Stanton was one of the early organizers of the movement, co-authoring the Declaration of Sentiments in 1848, which called for women's rights, including the right to vote. Susan B. Anthony, who worked closely with Stanton, was pivotal in campaigning for women's suffrage and founded the National Woman Suffrage Association with Stanton. Alice Paul was known for her more radical tactics, including hunger strikes and organizing parades, which brought national attention to the suffrage cause. Together, these leaders were foundational in securing the passage of the 19th Amendment in 1920, which granted women the right to vote.

The other choices feature figures who were prominent in women's rights or social justice movements but are either too contemporary or not primarily associated with the suffrage movement for voting rights specifically.