What company did muckraker ida tarbell write about?

She wrote about the Standard Oil Company.

Explanation:

She was an American journalist who pioneered in investigative journalism. She wrote a book called "The History of Standard Oil Company". Her work helped to dissolute the monopoly which the company possesses and influenced in the Anti-trust act enacted by the U.S. government in 1914.

I hope this answer helps you.

c

explanation: