Amit is Priya's brother. Priya is married to Sohan, who is an only child. Amit has a daughter named Kavya. Priya and Sohan have a son named Mohan. How is Kavya related to Sohan, and how is Mohan related to Amit? Additionally, considering that Priya's mother's name is Sunita, what is Sunita's relationship to Kavya and Mohan? Provide a very brief response.
Kavya is Amit's daughter, and since Amit is Priya's brother, Kavya is Priya's niece. Sohan is married to Priya, so Kavya, being Priya's niece, is also Sohan's niece by marriage.

Mohan is Priya and Sohan's son, making him Amit's nephew, as Amit is Priya's brother.

Sunita is Priya's mother, which makes her Amit's mother as well since Amit is Priya's brother. Sunita, as Priya's mother, is Kavya's grandmother because Kavya is Priya's niece and Sunita's daughter's child. In the case of Mohan, since he is Priya's son, Sunita is his grandmother.