The best way to describe labor unions in the United States today is that the majority of unions represent manufacturing workers (Knights of Labor), and government workers (Federal Bureau of Investigation).
A labor union is an organization which is formed by the workers who join together and use their strength to have a voice in their workplace. It is seen that through their union, both manufacturing and government workers have the ability to negotiate from a position of strength.
So these labor union members work together to negotiate and enforce a contract with management which tends to guarantee the things you care about like affordable health care, decent raises, stable schedule, and job security.
Hence, options B and C are correct.
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