Which factor were determined to directly cause the loss of skin pigmentation in humans as a result of natural selection?

Question

A. the clothing worn by humans in the early 8th century
B. the interaction of human populations with predators in colder climates
C. the impact of UV radiation on folate and Vitamin D levels in human populations
D. a change in the diet of human populations as they settled in colder climates

Answer 1

C. the impact of UV radiation on folate and Vitamin D levels in human populations