Please Help!

The diagram below shows groups that the Ku Klux Klan blamed for problems in the United States during the 1920s and 1930s:

Which statement explains why "Catholics and Jews" would complete the diagram above (technically below)?

1) Catholics or Jews led most organizations that opposed the Klan.

2) Most Communists and Bolsheviks were either Catholic or Jewish.

3) Catholics and Jews made up the majority of the U. S. population in the 1920s.

4) Most Klan members were Protestants who felt that other religions were inferior. (I don't think it's 4)

The constant presence of diseases or infectious agents within a given geographic area or population group. it may also refer to the usual prevalence of a given disease with such area or group. it includes holoendemic and hyperendemic diseases. a holoendemic disease is one for which a high prevalent level of infection begins early in life and affects most of the child population, leading to a state of equilibrium such that the adult population shows evidence of the disease much less commonly than do children (malaria in many communities is a holoendemic disease). a hyperendemic disease is one that is constantly present at a high incidence and/or prevalence rate and affects all groups equally. so probably family history.