Different nationalities have different architectural styles of traditional houses. Generally speaking, which of the following factors is the main reason? () A. Natural conditions B. Religious beliefs

Different nationalities have different architectural styles of traditional houses. Generally speaking, which of the following factors is the main reason? () A. Natural conditions B. Religious beliefs C. Communication Generally speaking, the architectural styles of traditional folk houses of different nationalities are mainly related to local natural conditions, such as: in hot and rainy areas, in order to better ventilate, dissipate heat and isolate moisture, more double-layer wooden buildings or bamboo buildings are built, with thin walls and large roof slopes; In tropical desert areas, it is hot and dry all year round. In order to reduce heat transfer and sandstorm, more bunkers with small windows and ceilings were built. In cold areas, in order to resist the cold, the walls are thick, the windows are small, and there is a fireplace or a fire resistance in the house.

So choose: a.