Answer:
B. A farmer experiments to learn which crops to grow best in his soil.
Explanation:
Before the Neolithic revolution, humans lived in nomadic societies and had two main preoccupations - hunting and gathering.
They were organized in such a way that gatherers gathered wild fruits, shellfish, vegetables etc. while hunters (predominantly men) hunted wild animals.
The Neolithic revolution represents a change from nomadic to settled life. People became familiar with agriculture and domestication of animals and plants. This led to settlement, since they found a way to produce and satisfy their needs themselves and didn't need to look for them no longer.
