Answer:
Option C.
Explanation:
The Pinkertons were a private police force called in to break the strike, is the right answer.
In the labor history of the United States, the Homestead strike which began on 1st July 1892 and ending in a clash between strikers and private security guards on 6th July 1892 was a strike that took place at the steel plant in the Homestead. The main reason behind the commencement of the strike was the management under the leadership of Henry Frick (who was known for his hatred of workers and the unions formed by labors), who wanted to destroy the union at the plant to reduce the wages.
Therefore, during the course of the strike, he employed Pinkertons (a private police force) to break the strike.
