Answer: Ida Tarbell was an American journalist
Explanation: Ida Tarbell was an American journalist and muckraker who exposed the power and influence of the Standard Oil Company in the early 20th century. She wrote a series of articles in McClure's magazine that revealed the unethical business practices, monopoly control, and price-fixing of Standard Oil. Her work is credited with leading to the dissolution of the company by the U.S. Supreme Court in 1911.