Who is famously known as Bihar Kesari ?

The correct answer is Option (2) - Shri Krishan Sinha

Shri Krishna Sinha was the first Chief Minister of Bihar and is popularly known as Bihar Kesari (Lion of Bihar). He was a prominent leader of the Indian National Congress and played a key role in the independence movement. He was also a social reformer and worked for the upliftment of the poor and downtrodden.