muckrakers were people who were investigative reporters who wrote about corrupted politics.
Knowing this, we could decide that the answer is
B. Political corruption.
Good Luck! :)
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The following topic that many muckrakers wrote about during the Progressive Era is political corruption. (B)
Muckrakers is the muckrakers were reform-minded journalists, writers.
Progressive is happening or developing gradually or in stages; proceeding step by step.
Corruption is dishonest or fraudulent conduct by those in power, typically involving bribery.
To learn more about progressive and corruption refer
https://brainly.com/question/2343781
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