Concept:Karewas are glacial clay deposits found in the Kashmir Valley. They are highly fertile and ideal for saffron (Zafran) cultivation.Explanation:Karewas are sedimentary formations embedded in moraines. They are composed of glacial clay and are mainly found in the Jhelum Valley of Kashmir and the Bhadarwah Valley of Jammu. These deposits are not grasslands, tribes, or local winds. The Kashmir Himalayas are well-known for these Karewa formations. Saffron, locally called Zafran, is the primary crop grown on Karewa soils due to their unique drainage and nutrient properties. Other crops like mango, grapes, or banana are not associated with this region.Answer:A. Saffron