Answer:
B. The president sent in federal troops to tell the strikers to go back to work.
Step-by-step explanation:
During the Great Strike of 1877, business owners went to President Rutherford B. Hayes for help in ending the strike, which had spread to many cities across the country and involved various industries, including railroads, mines, and factories. The president responded by sending in federal troops to tell the strikers to go back to work, and in some cases, the troops were used to forcibly suppress the strike and protect the businesses. This action was controversial and led to further tensions and conflict between labor and management.