Luca Cavalli-Sforza hypothesizes that skin color change came late because:
A) people used rudimentary umbrellas.
B) earlier populations had ready access to vitamin D from the foods they ate.
C) the Sun was not as powerful as it is today.
D) people were still migrating from a cold cloudy environment to a sunny environment.

Question

Quizplus · Accepted Answer

According to Luca Cavalli-Sforza, earlier populations had ready access to vitamin D from the foods they ate, which allowed them to maintain a lighter skin color despite living closer to the equator. As people began relying more on sunlight for vitamin D synthesis, natural selection favored those with darker skin to protect against the harmful effects of UV radiation.

Luca Cavalli-Sforza Hypothesizes That Skin Color Change Came Late Because