Supporters of the sherman antitrust act of 1890 believed that regulation of

Regulation of competition between businesses", is the right answer.

Explanation:

The Sherman Antitrust Act of 1890 is was an antitrust law in the U.S. This Act places contention among various firms and companies, which was authorized by Congress following the presidency of Benjamin Harrison. This law limits (1) anti-competitive negotiations and (2) single system that monopolizes or seeks to monopolize the relevant industry. Its repudiation of the cartel was also estimated to make proscribed many labor union activities.

herodotus taught this. herodotus was an ancient greek historian who was born in halicarnassus in the persian empire. he is known for having written the book the histories, a detailed record of his "inquiry" on the origins of the greco-persian wars.

i believe your answer is d)