The correct answer is (b), Bansidhar Bhagat.
Bansidhar Bhagat was the first speaker of the Uttarakhand Legislative Assembly. He was elected to the assembly in 1991 from the Tehri Garhwal constituency. He was a member of the Indian National Congress party. He served as the speaker of the assembly from 1991 to 1996.
Ajay Bhatt is a member of the Bharatiya Janata Party. He was elected to the assembly in 2002 from the Tehri Garhwal constituency. He served as the speaker of the assembly from 2007 to 2012.
Prakash Pant is a member of the Indian National Congress party. He was elected to the assembly in 1993 from the Tehri Garhwal constituency. He served as the chief minister of Uttarakhand from 2002 to 2007.
Govind Singh Kunjwal is a member of the Indian National Congress party. He was elected to the assembly in 2002 from the Tehri Garhwal constituency. He served as the speaker of the assembly from 2012 to 2017.