The correct answer is C) Agriculture-based societies have a more reliable source of calories, but are more vulnerable to drought.
The other options of the question were A) Hunting societies are better at making war than agricultural societies; the former often conquered the latter in the Southwest and B) Illness spreads more quickly in sedentary farming communities than it does in nomadic societies.
Ancestral Pueblo people had a thriving agricultural society, as opposed to more nomadic societies. The big trade-off for prioritizing agriculture over hunting was that agriculture-based societies have a more reliable source of calories, but are more vulnerable to drought.
Pueblo people learned agriculture techniques that allowed them to settle in that region and stopped to be Nomads. When the land is fertile and there exist the appropriate climate conditions, agriculture changes people's lives. Nomad people had to follow the animal herds everywhere they roamed to hunt them and feed their families.
