Who among the following Chahamana ruler defeated Sultan Muhammad Ghori in 1191?

Prithviraja III

The correct answer is Option 3- Prithviraja III

Prithviraja III, also known as Prithviraj Chauhan, was the ruler of the Chahamana dynasty of Ajmer and Delhi. He defeated Sultan Muhammad Ghori in the First Battle of Tarain in 1191.

Prithviraja was a skilled warrior and a charismatic leader. He was able to unite the Rajputs against the Muslims, and his victory at Tarain was a major setback for the Ghurid Empire.

However, Ghori returned to India in 1192 and defeated Prithviraj in the Second Battle of Tarain. Prithviraj was captured and blinded, and he was later executed by Ghori.