Ida Tarbell's investigative journalism lead to the following event: B) The Supreme Court broke up the Standard Oil trust. Ida Tarbell was an investigative journalist in the 1900's, who was known for exposing unfair business practices of the Standard Oil Company. She primarily focused her series of articles on exposing the wrong business practices of the Standard Oil Company and of John D. Rockefeller. It was due to her articles that The Supreme Court decided to break up the monopoly that The Standard Oil company had.
