Answer:
17th Amendment.
Step-by-step explanation:
According to the 17th amendment, 1913 of the Constitution of United States mentioned the direct election of the U.S. senator by the voters of the States itself. This amendment changed the previous election procedure of the senators. Previously the appointments of the senators were done by the state legislatures. This new amendment gave the people the power to choose and elect their senators, thereby establishing the true sense of democracy.