What is the central idea of this selection?
A Tarbell’s experience with oil fields made her the perfect person to bring legal action against Standard Oil.
B Tarbell’s work with newspapers and magazines helped with the formation of labor unions.
C Tarbell used journalism to educate the public and expose illegal or unethical practices.
D Tarbell was a gifted writer, but her prejudices toward successful companies made her a biased critic.
The correct answer is C Tarbell used journalism to educate the public and expose illegal or unethical practices.
Explanation: Ida Tarbell is best known for her investigative journalism, particularly her series on Standard Oil, which revealed corrupt practices and monopolistic strategies. This central focus on journalism aimed at informing the public about these issues aligns with option C, highlighting her role in exposing wrongdoing.