Which of the following is true of Section 7(a) of the National Industrial Recovery Act? [Select all that apply.] Which of the following is true of Section 7(a) of the National Industrial Recovery Act? [Select all that apply.] It led to the sudden and dramatic increase in labor unions' size and militancy across various industries. It guaranteed workers the right to collective bargaining through their chosen representatives. It forbade employers from forcing workers to promise not to join a labor union as a condition of employment. It provided methods that could be used for diffusing labor disputes or ending strikes