Answer
c. Africa
Work Step by Step
Africans seem to have accumulated a large amount of genetic mutations as compared to humans living on other continents. This high degree of diversity among Africans suggests that humans had lived in Africa for a lengthy amount of time.
People in other parts of the world seem to have mutations that are subsets of those found in Africa. This meant that the ancestors of these people had lived in Africa a long time ago and then migrated to settle in other parts of the world.
