Answer:
b)
Step-by-step explanation:
The successful development of agriculture in the desert climate by the Pima, Hopi, and Hohokam of the American Southwest is best described by formation of canals system by Southwest people that divert water from nearby rivers to irrigate their crops.
Agricultural engineering is one the biggest achievement for the people of the Southwest and they developed the first irrigation canal in the Gila River valley that directs water from rivers to fields. The canals are then modified and made narrower and deeper that minimize water loss through ground evaporation and absorption.
Hence, the correct answer is "b)".