Answer:
B. a union
Step-by-step explanation:
A union is an organized group of workers that come together to negotiate with their employer for better pay, benefits, and working conditions. By joining a union, workers gain collective bargaining power, meaning that they have more leverage when negotiating with their employer than they would have as individuals. In exchange for this increased bargaining power, union members typically pay dues or fees to the union. This money is used to fund the union's operations, including negotiation efforts and legal representation for members. Union membership is common in many industries, particularly in sectors where workers have historically been subject to poor working conditions or low pay.