Answer:
Option: They made terraces in the mountains to create more farmable land.
Step-by-step explanation:
The Inca civilization was a pre- Columbian Empire located in the southern part of Peru. They became known for their political, administration, architecture, and military. They adapted terrace farming according to their geographical condition. Terrace farming helped Incas in growing crops on sides of mountains by planting on in the slope. In terraces farming, carved steps of land are cut, which was suitable for irrigation, prevents drought and the erosion of soil.