What sort of farming defined the first type of agriculture?

sustenance

seasonal

subsistence

supplementary

What sort of farming defined the first type of agriculture?

B. seasonal

So I would say B. Seasonal

Explanation:

Wheat and barley are some of the first crops people grew. People probably started agriculture slowly by planting a few crops, but still gathered many foods from the wild. People may have started farming because the weather and soil began to change.