Final answer:
Potatoes, barley, and quinoa are grown in the Tierra Fria (Cold Land) climate zone, which has suitable conditions for these crops.
Step-by-step explanation:
The climate zone where potatoes, barley, and quinoa are grown is the Tierra Fria (Cold Land) zone, which is found at elevations between 6,001 and 12,000 feet in Middle America. This zone has a shorter growing season and cooler temperatures, which are suitable for growing these crops. The Inca Empire in the Andes Mountains, where the potato is from, flourished in this zone.