Which challenge did thomas nast face during his efforts to expose the corruption of tammany hall?

a. nast’s newspaper refused to print his political cartoons.

b. the tammany hall bosses tried to bribe him and threatened his life.

c. few people read or understood the cartoons he created.

The correct answer is:  

B.The Tammany Hall bosses tried to bribe him and threatened his life.

Thomas Nast rose to fame in the late 1860s when his satirical comics led directly to the arrest of Boss Tweed, for the corrupted “Tweed Ring” he ran in New York City bribing city officials, rigging elections, and corrupting the judiciary.

Tweed attempted to bribe Nast offering him up to $500,000 to study art in Europe. Failing to bribe Nast, Tweed threatened to have the Board of Elections boycott Harper’s books, where Nast worked, but the magazine´s board chose to support the cartoonist depicting Tweed as a thief.

i also think he is correct. i believe they came to washington to protest their rights.