The correct answer is C) union busting.
An action taken by employers or by the government against workers who wanted to organize was union busting.
Employers did not want to give any concession to workers, although workers gained more power when they formed labor unions. Employers had to use union busting tactics. These actions aimed to end, disrupt or break the formation or the spread of unions in the United States. These actions some times were legal, other times were illegal, in a few of them were violent.