The traditional settlements in B are () A. Tents B. Tall houses C. Cave dwellings D. igloos.

As can be seen from the picture, B is Southeast Asia, with a hot and rainy climate and many high-rise houses. High-rise residence belongs to a kind of dry column building in the south, with a herringbone roof, which is convenient for drainage and will not cause water accumulation. The ground floor is generally uninhabited, raising poultry and piling firewood, and the upper floor is where people live.

Therefore, choose: B.