Which one among the following stars is nearest to the earth?

Proxima Centauri is the nearest star to the Earth after the Sun. It is a red dwarf star located approximately 4.2 to 4.25 light-years away from our solar system [3]. It is part of the Alpha Centauri triple star system, which also includes the binary pair Alpha Centauri A and B [2]. While Alpha Centauri A and B are roughly 4.35 to 4.37 light-years away, Proxima Centauri is slightly closer to us [2]. Other stars mentioned in the options are significantly further away; for instance, Sirius is approximately 8.6 light-years from Earth. Proxima Centauri is so dim that it cannot be seen with the naked eye, having an apparent magnitude of about 11. It has been the closest star for about 32,000 years and will remain so for another 33,000 years [1].

Sources

1. [1] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 2: The Solar System > 2.6. What's the Closest Star to the Sun? > p. 37
2. [3] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 1: The Universe, The Big Bang Theory, Galaxies & Stellar Evolution > Red Dwarf > p. 10
3. [2] https://imagine.gsfc.nasa.gov/features/cosmic/nearest_star_info.html