Clear my Which of the following would best illustrate a scenario where the president of the United States could intervene according to the Taft-Hartley Act of 1947? O a. members of the post office file a complaint regarding hostile working conditions O b. a government contractor is accused of hiring child laborers tion O c. an army vehicle manufacturer fails to install guards on machinery with moving parts O d. the NLRB establishes updated guidelines for collective bargaining O e. police department union members across the United States strike