What was Roosevelt's primary tool against trusts and monopolies?

• A. Legislation
• B. Public opinion
• C. Litigation
• D. Regulation

Answer: (C)

The primary tool Roosevelt employed against trusts and monopolies was litigation. He believed in using the power of the courts as a means to challenge and dismantle large corporations that he perceived as harmful to the public interest. Roosevelt's administration was known for its vigorous prosecution of antitrust cases, including the notable suits against Northern Securities Company and Standard Oil. By pursuing legal action, he was able to effectively break up monopolies and enforce the Sherman Antitrust Act, signaling a strong stance against corporate greed and influencing the landscape of American business practices.

While legislation, public opinion, and regulation were also important components of his overall strategy to combat trusts, litigation was the direct approach Roosevelt used to hold violators accountable in a court of law, making it the most accurate answer in this context.