Which of the following titles was held by Samudragupta, a ruler of the Gupta Dynasty?

Kaviraja

The correct answer is Option 3- Kaviraja

Samudragupta, a ruler of the Gupta Dynasty, held the title of Kaviraja. This title means "King of Poets". Samudragupta was a scholar and poet himself. He also patronized the arts and sciences, and his court was a gathering place for scholars, poets, and artists.

The other titles listed in the question are not associated with Samudragupta. Jahan Panah and Sahib-e-Qiran were titles used by Mughal emperors. Mahendraitya was a title used by Kumargupta I, Samudragupta's son.