Ustad Hassu Khan was one of the founders of which of the following Gharanas of music?

Correct option is C

The correct answer is (c) Gwalior.
 Ustad Hassu Khan was one of the founders of the Gwalior Gharana of classical music.
 The Gwalior Gharana is one of the oldest Khayal Gharanas and is known for its rich heritage in Indian classical music.
 It emphasizes simplicity, clarity of swaras (notes), and extensive use of Alap (improvisation).
 The Gwalior Gharana has produced many renowned musicians and has significantly influenced the development of classical music in India.
 The Gharana was further developed and popularized by Ustad Haddu Khan and Ustad Natthu Khan, who were contemporaries of Ustad Hassu Khan.