Concept:Terrace farming creates flat steps on slopes to grow crops while preventing soil erosion.
Explanation:Hilly areas have steep slopes where rain quickly washes away soil.
By building terraces, farmers turn slopes into flat platforms.
This slows down water flow, reduces erosion, and retains moisture.
Terrace farming is common in the Himalayas, Andes, and Southeast Asia.
Coastal areas are flat and do not face slope erosion problems.
Deserts lack sufficient water and have flat terrain, making terraces unnecessary.
Plains are naturally flat and fertile, so they do not require terracing.
Therefore, terrace farming is only suitable for hilly and mountainous regions.
Answer:Hills (Option C)