The National Integration Council (NIC) is a body that promotes unity and harmony among diverse cultures, religions, and languages in India. It plays a vital role in fostering national integration and resolving issues related to communal harmony. The NIC is chaired by a prominent political figure who holds a significant position in the government. In this case, the correct answer is option 1, the Prime Minister of India. The Prime Minister is the head of the government and is responsible for leading and coordinating various political and administrative activities in the country. As the chairperson of the NIC, the Prime Minister provides leadership and guidance to ensure the successful implementation of policies and strategies aimed at fostering national integration.