Correct Answer: (a) Natyashastra
Note: The Bible of North Indian classical music is Natyashastra. It is a Sanskrit treatise on the performing arts. It is attributed to Bharat Muni.
Its many chapters contain detailed treatments of all the diverse arts that are embodied in the classical Indian concept of the drama, including dance, music, poetics, and general aesthetics. Its primary importance lies in its justification of Indian drama as a vehicle of religious enlightenmen.