How did the Neolithic Revolution contribute to the development of the first river valley civilizations?

A. It forced people to hunt large mammals into extinction
B. It helped people divide labor in their communities between hunting and gathering.
C. It prevented people from traveling long distances without wheeling vehicles
D. It allowed people to establish permanent farming communities

Question

How did the Neolithic Revolution contribute to the development of the first river valley civilizations?

A. It forced people to hunt large mammals into extinction 
B. It helped people divide labor in their communities between hunting and gathering.
C. It prevented people from traveling long distances without wheeling vehicles
D. It allowed people to establish permanent farming communities