Answer:
c) When a strike threatens the public welfare, the federal government is expected to step in.
Step-by-step explanation:
In 1902 the coal miners went on strike, the strike was called the Anthracite Strike of 1902, they aimed to get higher wages, shorter hours and recognition of their union. President Roosevelt summoned representatives of both sides in the White House and the President proposed arbitration. The workers accepted the proposal but the owners did not, then Roosevelt threatened to send federal soldiers to take over the mines. Thanks to his active participation, a settlement was reached.