Answer :
Final answer:
Option (A) Kepler 186-f is currently considered the better option for sustaining human life due to its location in the habitable zone, similar size to Earth increasing the likelihood of liquid water. Factors such as atmosphere, magnetic field and radiation levels must also be considered.
Explanation:
According to current research and understanding, the most promising exoplanet for sustaining human life amongst the options given is Kepler 186-f. This exoplanet is located in the habitable zone of its star which is similar in size to Earth, making the chance of finding liquid water more probable. However, this isn't a definitive answer as there are many factors including atmosphere composition, stable magnetic field, and radiation levels that greatly impact habitability. Other options like Proxima b, Kepler 62-f, and Kepler 452-b have unique traits as well but none as promising as Kepler 186-f yet. Further exploration and research will help refine our understanding of these fascinating heavenly bodies.
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