Answer:
A. Shift from hunter-gatherer to agricultural food ways
Step-by-step explanation:
Nomadic societies have to move from one place to another every time they run out of animals to hunt for their food.
After the development of agricultural knowledge, societies find a way to produce foods on their land without having to hunt. This was the reason why they can afford to stay on the same place for a long period of time and transition into a more sedentary societies.