The correct answer is: A. November
Ladakh is a cold desert region in the Indian state of Jammu and Kashmir. It is located in the Himalayas, and its climate is characterized by high altitude, low temperatures, and low rainfall. The driest month in Ladakh is November, with an average rainfall of only 2 millimeters.
The other options are incorrect because they are not the driest months in Ladakh. June is the wettest month, with an average rainfall of 100 millimeters. September is the second wettest month, with an average rainfall of 80 millimeters. April is the third wettest month, with an average rainfall of 60 millimeters.
The low rainfall in Ladakh is due to its location in the rain shadow of the Himalayas. The Himalayas block the moisture-laden winds from the Indian Ocean, which results in very little rainfall in Ladakh.