Which amendment gave women the right to vote?

The 19th Amendment to the United States Constitution is the correct response as it specifically granted women the legal right to vote. Ratified in 1920, this 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 was a landmark achievement in the women's suffrage movement, which had been fighting for decades to secure voting rights for women.

The other amendments mentioned have different focuses. The 15th Amendment, for instance, pertains to voting rights irrespective of race, color, or previous condition of servitude, primarily aimed at securing rights for African American men following the Civil War. The 24th Amendment addresses the prohibition of poll taxes in federal elections, which was another barrier to voting, but it does not specifically relate to women’s suffrage. Lastly, the 26th Amendment lowers the voting age to 18, ensuring younger citizens can participate in elections, but it too is not related to women's right to vote.