Unions sought to improve workers’ pay and working conditions by
a. hiring security guards to keep costs low.
b. setting up an apprentice system.
c. negotiating with employers.
d. working together in company towns.

C. negotiating with employers

The point of Unions was to try and negotiate with the employers on behalf of the workers. The idea was to reach a compromise about hours ad conditions, as Unions spoke on behalf of the workers.

What are you camparing it