The correct answer is option 4, Jaduguda. Jaduguda is the most important uranium mine in India. Uranium is a crucial mineral used for nuclear power generation. Jaduguda is located in the Singhbhum district of Jharkhand state. This mine is operated by the Uranium Corporation of India Limited (UCIL), a government-owned public sector enterprise. It is one of the oldest and largest uranium mines in the country. The uranium ore extracted from Jaduguda is processed to produce uranium oxide concentrate, which is then used for fueling nuclear power reactors. The mine plays a significant role in India`s nuclear power program as it supplies a considerable amount of uranium to fuel the reactors and help meet the country`s energy requirements.