How Did Kinsey and His Colleagues Obtain Their Sample

Multiple Choice

How did Kinsey and his colleagues obtain their sample?

A) They started asking friends and family, then friends of those friends, and so on until they had a large sample.
B) They contacted organizations or community groups, and attempted to get full participation from the group.
C) They randomly called individuals using telephone books from across the country.
D) They polled college students from most Midwestern universities.