Roosevelt believed in the efficiency of trusts unless they created. Why does he believe in this saying?

The correct answer is monopoly.

Explanation:

Roosevelt was a progressive reformer who earned a reputation as a "trust buster" through his antitrust processes and regulatory reforms. His presidency participated in the approval of the Pure Food and Drug Act which established the Food and Drug Administration to regulate food safety. However, Roosevelt took care to show that he did not disagree with trusts and capitalism in principle, but was only against monopolistic practices.