Answer: A. Sherman's Act, Section 1
Explanation:
The Sherman Antitrust Act is landmark 1890 U.S. legislation which outlawed trusts — monopolies and cartels — to increase economic competitiveness. As a means to regulate interstate commerce, the law is a broad and sweeping attempt to address the use of trusts as a tool for placing the control of a number of key industries into the hands of a limited number of individuals.
Section 1 of the Act clearly defines and bans specific means of anticompetitive conduct.