How did the development of irrigation systems improve living conditions?

AIt made people less dependent on trade.
BIt made people switch from hunting to herding.
CIt gave people a surplus of food.
DIt allowed people to move out of town onto farms.

Verified Answer :

I think your answer would be C. it gave people a surplus. Because now they could water their crops faster, which means you would get more ground covered . Which results in having a surplus. Because it's a faster way to raise crops.

C. itgave people a surplus of food.