What was Upton Sinclair’s main purpose in writing The Jungle? to promote the socialist views that he adopted as an adult
to explain why journalists had an obligation to tell the truth
to arouse public sympathy for slaughterhouse workers
to prompt Congress to pass food-safety laws

To arouse public sympathy for slaughterhouse workers

Explanation:

The Jungle by Upton Sinclair follows the life of a Lithuanian family in Chicago as they try to navigate through a very difficult and frustrating life. Through the eyes of the characters especially Jurgis who worked at a slaughterhouse, we are able to see the horrible conditions that workers in such industries are put through.

The aim of the book therefore, was to bring to light those terrible condition that the workers were put through in order to arouse public sympathy for the workers from the public.

the answer is a. harriet tubman was a nurse on the battlefield.

it was bribing i think i might be wrong though