Who among the following was the best-known Chahamana ruler ?

Prithviraja III

The correct answer is Option 1-Prithviraja III

The best-known Chahamana ruler was Prithviraja III. He ruled from 1177 to 1192 CE, and his capital was Ajmer in modern-day Rajasthan. He was a skilled warrior and a wise ruler, and he expanded the Chahamana kingdom significantly. He is also known for his defeat of the Muslim invader Muhammad Ghori in the First Battle of Tarain in 1191 CE. However, he was defeated by Ghori in the Second Battle of Tarain in 1192 CE, which marked the beginning of Muslim rule in India.