Pandit Mallikarjun Mansur (1910–1992) was a legendary Hindustani classical vocalist born in the Dharwad district of Karnataka. He is universally recognized as one of the foremost stalwarts of the Jaipur-Atrauli Gharana. - Agra Gharana is incorrect. This gharana was founded by Haji Sujan Khan and Ustad Ghagghe Khudabaksh, and is known for its rhythmic play and robust voice culture (e.g., Faiyaz Khan), but it was not Mansur's gharana.
- Gwalior Gharana is incorrect. Although Mansur initially received some training in the Gwalior style under Nilkanth Bua Alurmath, he is not considered a representative of this gharana. He later transitioned completely to the Jaipur-Atrauli style.
- Patiala Gharana is incorrect. Founded by Ustad Fateh Ali Khan and Ustad Ali Baksh, and popularized by Bade Ghulam Ali Khan, this gharana is known for its emotional appeal and complex *taans*, but it is unrelated to Mansur.
- Jaipur-Atrauli Gharana is correct. Mansur received his most significant training from Ustad Manji Khan and Ustad Bhurji Khan, who were the sons of the gharana's founder, Ustad Alladiya Khan. His singing style reflected the core principles of the Jaipur-Atrauli tradition, characterized by a robust, open-throated voice, intricate *taans*, and complex rhythmic structures. He was highly celebrated for his mastery over rare and complex ragas. Therefore, the correct option is D.