Question

progressive reforms that sought to break up monopolies and limit their power were known as restrictive legislation. trust - busting. unionism. free enterprise.

Explanation:

Trust - busting refers to efforts to break up monopolies and limit their power. It was a key part of progressive reforms to promote fair competition. Restrictive legislation is a more general term. Unionism pertains to labor unions. Free - enterprise is about a market system with little government interference.

Answer:

B. trust - busting