What major act established the Federal Election Commission (FEC)?

The Federal Election Commission (FEC) was established by the Federal Election Campaign Act (FECA) of 1971. This act was designed to regulate campaign financing in federal elections, aiming to ensure transparency and fairness in the electoral process. The creation of the FEC was a significant step in enforcing these regulations, as it provided a dedicated body to oversee campaign contributions and expenditures, enforce rules, and manage the public funding of presidential elections.

While the other acts mentioned address important aspects of voting rights and electoral processes, none of them are directly responsible for the establishment of the FEC. The Voting Rights Act focuses on eliminating racial discrimination in voting, the Help America Vote Act pertains to reforming voting systems and helping states improve their election infrastructure, and the Motor Voter Act facilitates voter registration through driver's license applications. Therefore, the Federal Election Campaign Act is the specific legislation that directly led to the creation of the FEC, making it the correct answer.