The diversity of human traits is most clearly enabled by our shared

A) moral values.
B) dizygotic development.
C) epigenetic molecules.
D) adaptive capacity.

The adaptive capacity of humans allows for a wide range of traits to evolve and be maintained in different environments. This includes physical traits like skin color and body shape, as well as cultural and behavioral differences. Moral values (A) may influence behaviors, but they do not directly contribute to diversity of traits. Dizygotic development (B) refers to the development of fraternal twins and is not relevant to the diversity of human traits. Epigenetic molecules (C) play a role in regulating gene expression, but are not the primary driver of diversity in human traits.