For a house located in an area that gets seasonal monsoons, a very pitched roof would be the best choice. A steeply pitched roof will help to quickly shed the water off the roof and prevent water from pooling on the surface, which can lead to leaks and water damage. Additionally, a properly designed and installed pitched roof will also help to increase the overall durability and longevity of the roof. On the other hand, a flat roof may be more prone to water damage, and a thatched roof may not be suitable for this type of climate and may not provide adequate protection from the heavy rains. Finally, while a light-colored roof may help to reflect sunlight and reduce cooling costs, it is not the best choice for preventing water damage in a monsoon-prone area.