The most accurate response regarding the influence of the Ku Klux Klan on religion in Indiana during the 1920s is:
Some Protestant ministers urged members to join the Klan.
During this time, the Klan in Indiana and other parts of the United States attempted to align itself with certain strands of Protestantism, promoting a worldview that combined nativism and a distorted interpretation of "Christian" values. Some ministers supported the Klan, seeing it as a way to uphold their vision of American society.