Concept:Every region has a different house.The type of house depends on the climatic conditions in the region.Houses are built specially to suit the needs of the people.Explanation:About houses in Leh and Ladakh:Houses in Leh have two floors.The ground floor has no windows.The ground floor is for animals and for storing necessary things.Wooden steps are used to reach the different floors.The roof is the most important part of their house.During the summer season, people dry many fruits and vegetables on the roof and store them for winters.The houses are made up of stones which are kept one over the other.The walls of these houses are coated with a thick layer of mud and lime.The house looked like a shed from inside with a lot of hay stored there.Thick tree trunks are used to make, a flat strong roof. ??Thus,A. Ground floor without windows: Found in the houses of Leh and Ladakh.B. Slanting wooden roofs made of tree trunks: Found in the houses of Assam.C. House-made almost 10-12 feet above the ground on stone pillars: Found in the houses of Assam.D. Thick walls made of stone, mud and lime: Found in the houses of Leh and Ladakh.E. Wooden floors: Found in the houses of Leh and Ladakh.