A Cultural Phenomenon That Is Based on Biologic Variation Would

A cultural phenomenon that is based on biologic variation would include:

A) belief that exposure of a pregnant woman to an eclipse can result in cleft lip.
B) denser bones in blacks result in less morbidity associated with osteoporosis.
C) the grandmother who determines that her grandchild has scoliosis and should seek treatment, then informs the parents of her decision.
D) a family that participates in feasts prepared to celebrate and make decisions.