Question

ida b. wellss book the red record
exposed the corruption of the standard oil monopoly
exposed the corrupt practices of the railroad industry
exposed the horrors of lynching in america
exposed the terrible work conditions of the meat - packing industry

Explanation:

Ida B. Wells's The Red Record focused on documenting and exposing the horrors of lynching in the United States. The other options relate to different muckrakers or topics: Standard Oil was exposed by others (e.g., Ida Tarbell), railroad industry corruption by other works, and meat - packing conditions by Upton Sinclair.

Answer:

C. exposed the horrors of lynching in America