According to the comments, the options are the following:
A. ending discrimination against blacks in the workplace
B. establishing the direct election of U.S. senators
C. granting U.S. citizenship to Native American tribes
D. passing a bill in Congress to enact strict immigration quotas
Answer:
B. Establishing the direct election of U.S. senators
Step-by-step explanation:
Before 1914, US senators were elected by state legislatures and the Senate served the interest of a few, usually the wealthy or powerful politicians. One of the accomplishments of the Progressive movement, whose main purpose was to expose corruption and make social and political reforms that improved society, was the passing of the 17th Amendment, which established the direct election of U.S. senators and hence modified Article I, section 3, of the US Constitution.