The 15th, 19th, and 26th Amendments to the United States Constitution all pertain to voting rights.
- The 15th Amendment (1870) prohibits the federal and state governments from denying a citizen the right to vote based on "race, color, or previous condition of servitude."
- The 19th Amendment (1920) grants women the right to vote, prohibiting any US citizen from being denied the right to vote on the basis of sex.
- The 26th Amendment (1971) lowers the voting age to 18 years, ensuring that citizens who are 18 years or older cannot be denied the right to vote based on age.
Thus, the correct answer is voting rights.