Which amendment granted women the right to vote?

The 19th Amendment is the correct answer because it specifically states that the right to vote shall not be denied or abridged on account of sex. Ratified in 1920, this amendment marked a significant milestone in the women's suffrage movement, effectively granting women the legal right to participate in elections at the federal and state levels. It represented a culmination of efforts by women and their allies who fought for years to secure equal voting rights.

The other amendments listed do not pertain to women's voting rights. The 15th Amendment, for example, was focused on prohibiting the denial of voting rights based on race, color, or previous condition of servitude. The 21st Amendment repealed Prohibition and does not address voting rights at all. Finally, the 24th Amendment eliminated poll taxes in federal elections, which was another barrier to voting but unrelated directly to women's suffrage. Thus, the 19th Amendment is the landmark legislation that granted women the right to vote.