The correct answer is: d) Prem Singh Tamang (Golay).
Prem Singh Tamang (Golay) is the current Chief Minister of Sikkim. He is the leader of the Sikkim Krantikari Morcha (SKM) party. He was elected Chief Minister in May 2019.
Lhendup Dorjee Kazi was the first Chief Minister of Sikkim. He served from 1975 to 1979. He was a member of the Indian National Congress (INC) party.
Nar Bahadur Bhandari was the second Chief Minister of Sikkim. He served from 1979 to 1994. He was a member of the Sikkim Democratic Front (SDF) party.
Pawan Kumar Chamling was the third and longest-serving Chief Minister of Sikkim. He served from 1994 to 2019. He was also a member of the SDF party.
Prem Singh Tamang (Golay) is the fourth Chief Minister of Sikkim. He is the leader of the Sikkim Krantikari Morcha (SKM) party. He was elected Chief Minister in May 2019.