Which amendment granted women the right to vote?

The 19th Amendment to the United States Constitution, ratified in 1920, granted women the legal right to vote. This amendment represents a significant victory in the women's suffrage movement, which fought to secure equal voting rights for women in the United States. The amendment states, "The right of citizens of the United States to vote shall not be denied or abridged by the United States or by any State on account of sex." This legislative change was pivotal in expanding the democratic process and ensuring that women could participate fully in the political sphere.

The other choices refer to different aspects of voting rights. The 15th Amendment prohibits the denial of voting rights based on race, but it does not specifically address gender. The 23rd Amendment grants residents of Washington, D.C. the right to vote in presidential elections, and the 26th Amendment lowers the voting age to 18, but neither of these amendments relate directly to women's suffrage. The significance of the 19th Amendment is rooted in its historical context, reflecting the long struggle for gender equality in voting.