Explanation:

- Samudragupta was a key emperor of the Gupta dynasty in ancient India.

- He is remembered for his military prowess and diplomatic skills, which were crucial in expanding his empire.

- Hinduism was the religion that Samudragupta practiced.

- Hinduism was the prevalent religion during his reign and greatly influenced his style of rulership.

- Options 2, 3, and 4:

- Buddhism and Jainism were also practiced during this period, but Samudragupta mainly supported Hindu rituals and traditions.

- Vedantism is related to Hindu philosophy, but not a distinct religion during his time; it is a later development in Hindu thought.