Which Statement Most Reflects the Idea of Heteronormativity

Which statement most reflects the idea of heteronormativity?

A) The practice of marriage is conditioned somewhat by wealth and race.
B) It is perfectly normal for people to marry no matter whether they are homosexual or heterosexual.
C) The one universal fact about humans is that people of all classes and races equally value marriage.
D) Kinship is the normative system of affinities and blood relations.