Final answer:
The Ku Klux Klan in the 1920s attracted Klan members across all economic and social classes, not limited to any specific demographic.
Step-by-step explanation:
According to the article, the statement that best describes Klan members is: C. Membership spanned all economic and social classes. Klan members were not just poor, rural farmers, nor were they solely upper-middle-class professionals.
The Ku Klux Klan attracted a diverse membership during its peak in the 1920s, which included more than 4 million members ranging from middle-class men and women to various other societal groups. This wide appeal can be attributed to the sense of identity, brotherhood, and sisterhood provided by its fraternal nature, its rallies, and its activities.
Despite its offering of community, the Klan's agenda was steeped in intolerance and reactionary politics, targeting immigrants, Jews, Catholics, and minorities, among others. The group advocated for "100 percent Americanism" and exploited vulnerabilities in society during times of rapid social change.