What is the Out of Africa theory?

a) it calculates that human migration from africa began from 10,000 - 20,000 years ago.

b) it calculates humans evolved to bipedal hominids around 50,000 years ago

c) it calculates humans evolved to bipedal hominids around 10,000 years ago

d) it calculates that human migration from africa began from 60,000 - 90,000 years ago.

The correct answer will be option-D.

Explanation:

Out of Africa, the theory is a well-substantiated theory which explains that modern Homo sapiens descended from the small group in Africa.

The theory suggests that homo sapiens dispersed from Africa around 50,000 to 90,000 years ago and displaced the earlier species of Homo like Denisovans and Neanderthals.

This theory is supported by the evidence and is considered the widely accepted theory explaining the evolution of humans.

Thus, option-D is the correct answer.

D. It calculates that human migration from Africa began from 60,000-90,000 years ago.