Question

what role did irrigation techniques play in the success of the olmecs?
a it allowed them to grow crops year - round.
b it allowed them to survive in an arid environment.
c it allowed them to fertilize the soils populated by their settlements.
d it allowed them to cultivate an extensive of agricultural products.

Explanation:

To solve this, we analyze each option. Option A: Irrigation techniques relate to water management, so using them to find new water sources makes sense (e.g., canals, wells to access more water). Option B: Irrigation is about water, not surviving in arid (dry) environments directly in the way this option implies. Option C: Irrigation provides water for crops, not fix soil problems from overuse (that's more about soil management like fertilization or crop rotation). Option D: Irrigation is for water supply, not calculate resource approaches. So A is correct as irrigation expands water access for farming.

Answer:

A. It allowed them to find new sources of water