Which was the last dynasty to rule Ladakh before it became a part of Indian Union?

Answer: Option D

Ladakh remained a part of Dogra empire till 1947, when India got its independence. In October 1947, King Hari Singh of Dogra dynasty signed an agreement with the Indian Union. According to the agreement, Jammu and Kashmir along with Ladakh became a part of the Indian Union but allowed to have their separate Constitution and Flag.