The answer is "c.to protect their interests".
A labor union is an association that goes about as a delegate between its individuals and the business that utilizes them. The fundamental motivation behind labor union is to enable specialists to consult for more ideal working conditions and different advantages through aggregate bartering.
Individuals who aren't in a union or don't know anybody in an exchange or worker's party frequently uncertain what labor union do and why somebody would join. A labor union is an association of specialists shaped to advance the social and monetary interests of its individuals.
