An example of US social change in the 1920s was

The 1920s brought notable changes in popular culture, including jazz music, new dances, and fashion trends associated with the flapper era. These shifts changed how many people dressed and spent their leisure time, so “new music and fashion trends” is the best example of social change. The other choices describe political policies or attitudes rather than a change in everyday culture.

AI-written and checked against the verified answer.