Answer:
D. Journalists and reformers
Explanation:
They were the journalists in the Progressive Era (1890's to the 1920's). Upton Sinclair and Ida Tarbell were two of them.
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I believe, the narrator of filthy riches is Joe Pike
He is known from his previous works in freemason and studio 264. Prior or after his narration works in these, Joe pike does not have any particular noteworthy roles on his portfolio.
Answer:
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Explanation: