Which of these is would be best classified as an ethnic group

a. there was serious competition for tech jobs at the downtown clinic.

hope this

just finished this it is b. centrifugal force

populist movement, in u.s. history, politically oriented coalition of agrarian reformers in the middle west and south that advocated a wide range of economic and political legislation in the late 19th century. thus in 1892 their leaders organized the populist, or people's, party, and the farmers' alliances melted away.