The sentence about galaxies provides evidence of universe expansion that supports the Big Bang Theory A. Galaxies are moving away from each other.
According to the Big Bang Theory, it was stated that an explosion resulted in the creation of the universe. It's the explanation that was given regarding how the universe was created.
The evidence of universe expansion that supports the Big Bang Theory is that the galaxies are moving away from each other.
It should be noted that galaxies move. They can move and rotate through space. As a result of the expansion of the Universe, galaxies are moving away from each other.
