Which of the following rights did Susan B. Anthony advocate for?

Susan B. Anthony was a pivotal figure in the women's suffrage movement in the United States. She dedicated her life to advocating for voting rights specifically for women, believing that suffrage was essential to achieving equality and empowerment for women in society. Her efforts in campaigning for this cause included organizing rallies, giving speeches, and even casting a vote illegally in 1872, which led to her arrest.

While the other choices focus on important social issues, they are not primarily associated with Anthony's advocacy. Workers' rights and educational reforms have been championed by different activists and movements, and environmental rights have become more prominent in later years. Therefore, the correct answer emphasizes Anthony's primary focus on women's voting rights, highlighting her role as a key figure in this historic struggle for gender equality.