Respuesta :
I believe the answers are;
A. Unhealthy food processing, & D. Corrupt Business Practices.
The subjects that the muckrakers wrote about included B. corrupt government officials and D. corrupt business practices
Muckrakers were journalists that exposed the shortcomings of capitalism and big business with the additional problems of urbanization, immigration, and income inequality that they created.
Thus, muckrakers used their journalistic prowess to investigate the political and economic corruption and social hardships resulting from the industrialization of the United States.
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