Abdul Karim Khan was the exponent of which school of Hindustani Music?

Kirana Gharana

The correct answer is Option (4) - Kirana Gharana

Abdul Karim Khan was a renowned Hindustani classical vocalist and a pivotal figure in the development of the Kirana Gharana. The Kirana Gharana is one of the major schools or styles of Hindustani classical music, known for its emphasis on intricate melodic patterns, subtle ornamentation, and the use of the "gayaki ang" or vocal style in instrumental music.