Look at my question!!

i believe your answer is C because the definition of Social Darwinism describes the various theories that emerged in Western Europe and North America in the 1870s which applied biological concepts of natural selection and survival of the fittest to sociology, economics, and politics.

Explanation:

in 1897, pershing became a tactical officer at west point, and that's where he was given the nickname "black jack." pershing's first name is "john," for which "jack" is a nickname, and he was a white man who commanded black troops. hence "black jack".