The house shown here is from Arunachal Pradesh. It is constructed on top of a platform made of bamboo sticks. This could be because A. bamboos are easily available in the region. B. the region receives high rainfall and the ground is mostly wet.
C. bamboos keep the house cool from extreme heat. D. bamboos can keep the house warm from severe cold.

Option B, the region receives high rainfall and the ground is mostly wet, is the right answer.

Explanation:

Arunachal Pradesh is one of the Indian states. It is located in the North-Eastern part of India. The climatic conditions of Arunachal Pradesh vary with elevation, for instance, areas that are in low altitude have a humid subtropical climate and those with high and very high altitude have a subtropical highland and alpine climate. At the same time, this state of India receives  2,000 to 5,000 millimetres (79 to 197 in) rainfall. As a result of the rainfall, the ground is mostly found wet and thus the people of Arunachal Pradesh build their houses on bamboo sticks.

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