Which statement provides the best evidence to support the conclusion that the federal government supported the interests of "big business" and industry over the interests of labor unions at the turn of the century?
a) through passage of the sixteenth amendment, the federal government instituted an income tax, which had been struck down by the wilson-gorman tariff act.
b) in 1887, labor day was established as an official holiday to commemorate the contributions made by workers to the economic strength and prosperity of the nation.
c) with the passage of the mckinley tariff bill in 1890, the federal government increased tariffs on agricultural products and the increased cost of manufactured goods hurt farmers financially.
d) during the pullman strike of 1894, rail service across america was suspended because of striking workers and boycotts; president cleveland had to intervene with federal troops to end the strike.