Which of the following issues was the subject of a muckraker’s investigation? A. the business practices of the railroads

B. Rockefeller’s Standard Oil monopoly

C. vote stealing and political machines

D. All of these choices are correct.
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D. All of the above
muckrakers are investigative journalists who reported about and exposed such issues as crime, fraud, waste, public health and safety, graft, and illegal financial practices. A muckraker's reporting may span businesses and government.

Dis your correct answer