There were many examples that inspired the reform-minded spirit after 1900. Which was not an example?

Question

There were many examples that inspired the reform-minded spirit after 1900. Which was not an example? 
       Muckrakers
       Plessy v. Ferguson
       Triangle Shirtwaist Factory fire
       The Jungle

Ms. Sue · Answer

Muckrakers published news and gossip about prominent people and events. Plessy v Ferguson was a Supreme Court decision stating that blacks and whites could have separate but equal facilities. The factory fire killed 145 people, mostly young women. The Jungle by Upton Sinclair brought people's attention to unsanitary conditions in the meat-packing industry.

Bob · Answer

Muckrackers

Ms. Sue · Answer

http://www.ushistory.org/us/42b.asp

Bob · Answer

They all how a part in reform. I would have to change to Plessy v. Ferguson because of it was just between the races and not everyone

Ms. Sue · Answer

You're right. Plessy v Ferguson did not influence most of the country very much. Blacks were not in a position to let their feelings be known at that time.