Question

ida b. wells’s 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 was a prominent civil rights activist who focused on documenting and exposing lynching in the United States. Her book "The Red Record" specifically aimed to reveal the horrors of lynching. The other options relate to different muckrakers or issues: exposing Standard Oil was by Ida Tarbell, railroad industry corruption was addressed by others, and meat - packing industry conditions were exposed by Upton Sinclair.

Answer:

C. exposed the horrors of lynching in America.