Why Are Genetics and Evolution So Important to Anthropology

Why are genetics and evolution so important to anthropology?

A) They determine the clear distinction between biological and cultural forces acting through human history.
B) They help anthropologists document and explain human biological diversity.
C) They provide the key to understanding the rate of environmental change throughout human history.
D) They define humans' position at the top of the hierarchy of biological diversity.
E) They give anthropology some credibility as a scientific field.