The correct answer is A.
The Wagner Act, was a New Deal reform passed by President Franklin Roosevelt on July 5, 1935.
It is the most important piece of legislation protecting workers' and unions' rights. It guarantees basic rights of private sector employees to organize into trade ( labor ) unions, engage in collective bargaining for better terms and conditions at work, and to take collective actions as strike when necessary. It also guaranteed the freedom of association.
The Act also defined and prohibited five unfair labor practices by employers and specified the election of bargaining representatives.