Answer:
C. Polygenic Inheritance.
Explanation:
This deals or reflect to the differences in skin colours amongst human population. Polygenic traits are said to be inheritance that are controlled by multiple genes instead of just one. The genes that control them may be located near each other or even on separate chromosomes. This is because multiple genes are involved, polygenic traits do not follow.
Some examples of polygenic traits are height, skin color, eye color, and hair color.