Who was the notable muckraker journalist who wrote about issues of the meatpacking industry?

Upton Sinclair

Upton Sinclair was muckraker and progressive who wrote about issues of the meatpacking industry. He wrote The Jungle which exposed the unsanitary conditions in the Chicago meat packing. His revelations contributed to passage of the Pure Food and Drug Act and the Meat Inspection Act.

the real answer is b

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