The correct answer is 1964. Explanation & Key Takeaways: Communist Party of India (Marxist) • The Communist Party of India (Marxist) is a communist political party in India. • It is the largest communist party in India in terms of membership and electoral seats and one of the national parties of India. • The party emerged from a split in the Communist Party of India (CPI) on 7 November 1964. Hence option 4 is correct. • As of 2022, CPI(M) is a part of ruling alliances in two states — the Left Democratic Front in Kerala and the Secular Progressive Alliance in Tamilnadu. • CPI- M has representation in the legislative assemblies of 9 states. • The All-India Party Congress is the supreme authority of the Communist Party of India (Marxist). • However, during the time between two party congresses, the Central Committee is the highest decision-making body. • The Central Committee shall elect from among its members a Polit Bureau including the General Secretary. • The Polit Bureau carries on the work of the Central Committee between its two sessions and has the right to take political and organizational decisions between two meetings of the Central Committee.