The response that best captures the Supreme Court’s role in progressive reform during the presidencies of Theodore Roosevelt and William Howard Taft is:
The Supreme Court actively regulated trusts and monopolies.
During this period, the Supreme Court issued rulings that helped define the regulatory framework for trusts and monopolies, impacting the enforcement of antitrust laws. Notably, the Court's decisions, such as those engaging with the Sherman Antitrust Act, aligned with the broader progressive movement's goals of curbing corporate power and promoting fair competition.