Explanation:

- Option 1: Samudragupta

- Samudragupta was a great military conqueror and ruler of the Gupta Empire, but there are no records of him marrying a Lichchhavi princess.

- Option 2: Sri Gupta

- Sri Gupta is considered the founder of the Gupta dynasty, but there is no historical evidence about him marrying into the Lichchhavi clan.

- Option 3: Chandragupta-I

- Chandragupta-I, the third ruler of the Gupta dynasty, significantly strengthened his empire through a strategic marriage.

- He married Kumaradevi, a princess from the Lichchhavi clan, which enhanced the dynasty’s status and influence.

- This marriage is credited with laying the foundation for the greatness achieved by the Gupta dynasty.

- Option 4: Ramagupta

- Ramagupta was a lesser-known Gupta ruler, mostly overshadowed by his brother, Chandragupta II, with no significant recorded alliance with the Lichchhavis.