Answer:
The right answer is: It was effective in protecting union's rights to picket and strike.
Step-by-step explanation:
The Clayton Act, signed to become law by president Wilson in 1914, is an amendment to the Sherman Antitrust Act of 1890. It helps and reinforces protection against unlawful and unethical restrains towards trade and labor. It effectively protects workers' unions as well as their rights to protest in peace, declare strikes and cooperatives.