According to their defenders, how did trusts benefit the economy? a. trusts increased competition among corporations. b. trusts improved the effectiveness of government regulation. c. trusts lowered production costs and increased wages. d. trusts prevented monopolies and improved the quality of products.

c. Trusts lowered production costs and increased wages.

Explanation:

Trusts were the legal void that allowed oil companies and other companies to create a "monopoly" between all of their suppliers and consumers, they had controll over most of the production of a certain production and they said that this helped the economy because it lowered cost production and thus rising wages for their employees.

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