Answer:
The correct answer is letter "C": is the result of both genetic and environmental factors.
Step-by-step explanation:
There have been several studies about human evolution as a species. It is inevitable to relate this topic to the prominent findings of Charles Darwin (1809-1882) in his book "On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life" or simply known as the Origin of species. Mainly, Darwin sustained that, in general, species' evolution happens thanks to environmental adaptations that are transmitted from one generation of a species to another in their genetics.