The correct answer is D. Kullu.
Kullu district received the maximum rainfall in 2014 during the post-monsoon season (October- November). The district received an average rainfall of 1,000 mm during this period. The other districts of Himachal Pradesh received much less rainfall during this period. Solan district received an average rainfall of 500 mm, Chamba district received an average rainfall of 400 mm, and Hamirpur district received an average rainfall of 300 mm.
The high rainfall in Kullu district is due to its location in the Western Himalayas. The Western Himalayas are a mountain range that receives a lot of rainfall from the monsoon winds. The monsoon winds blow from the Indian Ocean to the Bay of Bengal. As they cross the Western Himalayas, they are forced to rise, which causes them to cool and release their moisture as rain.
The high rainfall in Kullu district is beneficial for the agriculture and tourism industries in the district. The agriculture industry in Kullu district is based on the cultivation of rice, wheat, and maize. The tourism industry in Kullu district is based on the natural beauty of the district, including its mountains, forests, and rivers.