Answer:
A. Using crop rotation and terracing
Step-by-step explanation:
Crop rotation and terracing help satisfy the agricultural needs of a civilization and protect its population. Crop rotation is the practice of growing different crops sequentially in the same land and terracing is the action of preparing a soil to grow crops on it. This helps develop its agriculture and grow more crops, and it also grows food for the population to eat. These two practices help to keep the soil properties and keep growing crops for a longer time.