Which of the Following Was a Way That the Chavín

Which of the following was a way that the Chavín people responded to Andean environmental constraints?

A) They developed hardy wheat crops that flourished in the colder elevations.
B) They lacked the technology to produce metal goods,so they specialized in wood carving.
C) They relied on llamas to transport political officials across the empire.
D) They organized their societies vertically along steep mountainsides to take advantage of the different crops that could be grown in different zones.