Explanation:

- Bana Bhatta was a notable 7th-century Sanskrit scholar and poet.

- Harshvardhana: He was the ruler of the Vardhana Empire in North India. Bana Bhatta was a celebrated court poet in his court and authored the famous work "Harshacharita," detailing Harsha's life and rule.

- Kanishka: He was a Kushan emperor known for his distinct patronage of Buddhism and vast dominion. However, Bana Bhatta was not associated with his court.

- Yashovarman: A ruler of Kannauj, not directly linked to Bana Bhatta.

- Samudragupta: Known for his military conquests and was a ruler of the Gupta dynasty. There's no evidence suggesting Bana Bhatta's presence in his court.

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