Which is a binary star? a) algol b) the sun c) alpha centauri d) polaris e) the big dipper

Alpha Centauri

Explanation:

A binary star is a system of two stars, one revolving around the other or both revolving around a common center. It should not be confused with the two stars that appears close in the sky with the naked eye. Binary stars are classified as eclipsing binaries, visual binaries, astrometric binaries and spectroscopic binaries.

answer; i believe that the correct answer is (lung);