The Twenty-Fourth Amendment, which was ratified in 1964, prohibited what?

a. the federal government from attempting to intervene in the powers of the state governments to regulate voting
b. the popular election of U.S. senators
c. the use of tax revenues to pay for elections
d. any law that made payment of a tax a voting eligibility requirement in federal elections
e. the possession of firearms by private citizens in the District of Columbia

ANS: D