The impact of our cultural backgrounds on the development of our personal values best illustrates the influence of

A) temperament.
B) heritability.
C) mutations.
D) the environment.

The cultural background refers to the environment and the societal factors that a person grows up in, which heavily shapes and influences their personal values. Therefore, the impact of cultural backgrounds on personal values best illustrates the influence of the environment. Temperament and heritability may have some influence on personal values, but not as much as environmental factors. Mutations are genetic changes and do not play a direct role in the development of personal values.