Bismillah Khan, the legendary shehnai maestro, was from the district of Varanasi in Bihar. He was born in 1916 in the village of Dumraon, which is now in the state of Bihar. He began learning to play the shehnai at a young age from his father, who was also a shehnai player. He went on to become one of the most celebrated shehnai players in the world. He was awarded the Bharat Ratna, India’s highest civilian award, in 1991. He died in 2006 at the age of 90.
The other options are incorrect. Bhojpur is a district in Bihar, but Bismillah Khan was not from there. West Champaran is also a district in Bihar, but Bismillah Khan was not from there either. Purnea is a district in Bihar, but Bismillah Khan was not from there either.