Final answer:
The laws governing labor relations include the Norris-LaGuardia Act of 1932, Railway Labor Act, and Wagner Act of 1935, but not the Unfair Labor Practices Act of 1973.
Step-by-step explanation:
The correct answer is a. Unfair Labor Practices Act of 1973. The other options, b. Norris-LaGuardia Act of 1932, c. Railway Labor Act, and d. Wagner Act of 1935, are laws that govern labor relations. The Wagner Act, also known as the National Labor Relations Act, protects the right of workers to create unions and bargain collectively with employers. It also created the National Labor Relations Board to enforce its provisions. The other laws mentioned in the options also have significant roles in labor relations.