Question

1. the national income tax, free and unlimited coinage of silver, and the direct election of u.s. senators were proposals included in the -

populist party platform
16th amendment
federal reserve system act

Explanation:

The Populist Party platform in the late - 19th century included demands such as a national income tax, free and unlimited coinage of silver, and the direct election of U.S. Senators. The 16th Amendment dealt with income tax but not the other two. The Federal Reserve System Act was about the nation's central banking system and not related to these proposals.

Answer:

Populist Party platform