Question

Two stars that are bound together by gravity and orbit a common center of mass are known as A. meteoroids. B. constellations. C. galaxies. D. binary stars.

Answer 1

They would be called Binary Stars. So, letter D. Hope this helped.

Answer 2

Binary stars are the set of two stars where one star moves around other under the influence of the gravity of other star

or the two stars bound together by gravity of another common centre

Thus answer is D: binary stars