The statement that most accurately describes the way in which a feature of material culture varies according to geographic region is:
Hip hop developed in the Bronx in the 1970s in response to social and political conditions, but as it diffused, hip hop became less political in order to achieve mainstream appeal.
This statement highlights the influence of geographic and social contexts on a cultural phenomenon and how it evolves and adapts as it spreads to different regions, reflecting changes in material culture.