Answer:
"The Jungle" is the best known muckraking work by Upton Sinclair. In the novel, Sinclair criticizes the inhumane treatment of working-class by politically powerful American society.
Step-by-step explanation:
The story is about the experience of Lithuanian Family that has immigrated to the US to make fortune. But unfortunately, they are surrounded by unscrupulous businessmen and politicians which leads them to their ruins.
Sinclair in the paragraph demonstrates that the company is corrupt. Marija loses her job.