Which of the following characteristics was true of native-born Protestants? A) They opposed the 100% Americanism movement. B) They were the largest participants in the Great Migration. C) They emigrated to southern and eastern Europe in large numbers. D) They comprised a large part of the membership of the Ku Klux Klan.

D. They comprised a large part of the membership of the Ku Klux Klan.

Explanation:

The majority belonged to the Ku Klux Klan which was an organization of the late nineteenth century declared anti-Semitic, anti-black, anti-Catholic, anti-Masonic, anti-communist, homophobic and xenophobic, but deeply Protestant Christian, the theology of Ku Klux Klan is based on Protestantism of figures openly anti-Semites like Martin Luther.