Correct Option: D

E.M.S. Namboodiripad was an Indian Communist leader, Socialist-Marxist theorist, revolutionary, author, historian, social commentator and the first Chief Minister of Kerala state. As the first non-Indian National Congress Chief Minister in Republic of India, he became the leader of the first democratically elected Communist government in India (San Marino being first in the world). It was also the first time for a regional party anywhere in India to win state elections.