The correct answer is C) They are reasons why people stopped moving.
Climate change eliminated old food supplies.
• The population grew and there was a need for more food.
• Societies were growing more complex.
• New tools made food production, collection, and storage easier.
The option that describes the statements related to the origins of humans is "They are reasons why people stopped moving."
Early humans stopped being nomads when they leaerned agriculture techniques and started to settle in one place to grow crops. For instance, that was the case of the Sumerians who settled in between the Tigris and Euphrates Rivers in the Middle East. There, they developed complex city-states such as Kish, Lagash, and Uruk.
The other options of the question were A) They are causes of the Neolithic Revolution. B) They are results of migration from Africa. D) They are characteristics of new civilizations.
