Answer:
B) Interest group restrictions in the Federal Election Campaign Act of 1974
Explanation:
In the year 1974 the Federal Election Commission place legal limits on the campaign contributions and expenditures.The Act was amended again in 1976, in response to the provisions ruled unconstitutional by Buckley v. Valeo, including the structure of the FEC and the limits on campaign expenditures, and again in 1979 to allow parties to spend unlimited amounts of hard money on activities like increasing voter turnout and registration