Question

The best explanation for how humans populated the Earth is they migrated from Asia to other continents over the last two million years. they migrated mostly over land from Africa over the last eighty thousand years. they developed varied human species in different places over millions of years. they traveled by boat from Africa to other continents over the last forty thousand years

Answer 1

The best explanation for how humans populated the Earth is that "they migrated
mostly over land from Africa over the last eighty thousand years" since all human life originated in Africa. 

Answer 2

The correct answer is B) they migrated mostly overland from Africa over the last eighty thousand years.

The best explanation for how humans populated the Earth is "they migrated mostly overland from Africa over the last eighty thousand years."

Historians and anthropologists had done a lot of research on this subject and concluded that South Africa is "the cradle of humanity." Yes, scientists considered that humanity originated in the region of South Africa and from there, humans started to spread to other regions of the planet. They migrated to other parts of Africa and then they went to Asia.