Where did the first humans originate?

Question

A. Asia
B. Africa
C. Europe
D. America

Answer 1

B Africa

That's what we were taught, some argue Asia now, but "Out of Africa" is the long held belief.

Answer 2

1) it is difficult to say.

2) In addition, the geographical areas occupied by our ancestors expanded during the course of human evolution. As far as is known, the earliest examples were in north-central, eastern, and southern Africa, and they began to move into the tropical and subtropical areas of Eurasia at least 1.5 million years ago, and into the temperate parts of these continents at least 500,000 years ago. Much later (perhaps 60,000 years ago) human beings were able to cross the water barrier into Australia. Only long after the appearance of modern human beings did people move into the New World, probably less than 30,000 years ago. It is likely that the increase in human brain size took place as part of a complex interrelationship that included increasing social complexity and the elaboration of tool use and toolmaking, as well as other learned skills, which permitted our ancestors to be increasingly able to live in a variety of environments.