Which of the following titles was given to the Krishnadeva Raya?

Establisher of the Yavana kingdom

The correct answer is Option 3 - Establisher of the Yavana kingdom

Although the armies of the Sultans were responsible for the destruction of the city of Vijayanagara, relations between the Sultans and the rayas were not always or inevitably hostile, in spite of religious differences. Krishnadeva Raya, for example, supported some claimants to power in the Sultanates and took pride in the title “establisher of the Yavana kingdom”. Similarly, the Sultan of Bijapur intervened to resolve succession disputes in Vijayanagara following the death of Krishnadeva Raya. In fact the Vijayanagara kings were keen to ensure the stability of the Sultanates and vice versa. It was the adventurous policy of Rama Raya who tried to play off one Sultan against another that led the Sultans to combine together and decisively defeat him.