Correct Answer:
Option A - Proxima Centauri has been the closest star to the sun. It is a small, low-mass star located 4.2465 light years away from the sun in the southern constellation of centaurus. It is a member of the Alpha Centaury star system.
A. Proxima Centauri has been the closest star to the sun. It is a small, low-mass star located 4.2465 light years away from the sun in the southern constellation of centaurus. It is a member of the Alpha Centaury star system.