Concept:Dhrupad is an ancient vocal style originating in North India, deeply rooted in Hindustani classical music.
Explanation:The term "Dhrupad" combines "Dhruva" (eternal) and "Pada" (verse), meaning a fixed melodic verse.
It began in temple music as a devotional offering and later evolved into a meditative classical form.
A Dhrupad performance has two main sections: the unmetered, improvised Alap and the metered composition sung with a steady rhythm.
The accompaniment uses the Pakhawaj (a barrel drum) instead of tabla.
Other options: Rabindra Sangeet is Tagore's Bengali songs; Western classical is European orchestral music; Carnatic music is the South Indian classical tradition.
None of these match the historical and stylistic origin of Dhrupad.
Answer:B. Hindustani classical music