Who among the following founded the Sikkim National Congress in 1962?

Kazi Lhendup Dorji Khangsarpa

The correct answer is Option (1) → Kazi Lhendup Dorji Khangsarpa

Kazi Lhendup Dorji Khangsarpa (1904): Leader of democracy movement in Sikkim; founder of Sikkim Praja Mandal and later leader of the Sikkim State Congress; in 1962 founded the Sikkim National Congress; after an electoral victory, he led the movement for integration of Sikkim with india; after the integration, Sikkim Congress merged with the indian National Congress.