What was the most important consequence of the large-scale ecological changes in africa two hundred thousand years ago?

Question: What was the most important consequence of the large-scale ecological changes in Africa two hundred thousand years ago?

Quicker, Larger-brained and more adaptable Homo Sapiens survived and spread out of Africa.

Explanation: Larger brains gave early Homo Sapiens the ability to learn, understand, remember, and pass on information to the next generation. Homo sapiens migrated out of Africa between 50,000 and 12,000 BCE. This made distinct regional cultures develop as a response to different environments. Homo sapiens were even able to develop complex language and form large, long-lasting communities and they expanded into nineteen separate language families.

i think the answer is b.

it foreshadows the theme of the paragraph and hints the topic that will be discussed in the paragraph!