Question

populists believed that bankers, landowners, and political parties
were in constant conflict at the expense of important issues.
had taken over the knights of labor along with other labor unions.
supported collective action to achieve prosperity for all.
worked together to keep control of the us in the hands of the wealthy.

Explanation:

Populism in late 19th-century US centered on opposing elite groups they saw as consolidating power. Populists viewed bankers, large landowners, and established political parties as a unified elite that maintained control of the country to benefit the wealthy, marginalizing farmers and working-class people. The other options do not align with core Populist beliefs: they did not see these groups as in conflict, did not claim they took over the Knights of Labor, and Populists themselves pushed collective action rather than attributing that to these elites.

Answer:

worked together to keep control of the US in the hands of the wealthy.