Answer:
C. It extended along the Andes Mountains in western South America and featured stone buildings and irrigated farms.
Step-by-step explanation:
The Inca people lived in the Andes mountains fifteenth-century C.E and they developed a great empire in South America which was home to over twelve million people. In just 100 years, one of the largest empires in the world has been created. The coastal region was dessert so they adopted an irrigation system to feed a large number of people both on the coast and in the highlands, where they established settlements.