The correct option is the first one. The Mongols were tolerant of the different religions.
The Mongol Empire existed during the 13th and 14th centuries and was the largest contiguous land empire in history. The Mongol empire was founded by Genghis Khan in 1206. It spanned from the Pacific Ocean to the Danube River and the Persian Gulf. The Mongol Empire stemmed from the unification of several nomadic tribes in the Mongol homeland under the leadership of Genghis Khan.