What fact do scientists believe provides evidence for the big bang theory? a. all comets follow elliptical orbits. b. most extra-solar planets are gas giants. c. all stars feature nuclear fusion in their core. d. all distant galaxies are moving away from us. apex?

D

Explanation:

This is because it is believed that the galaxy was once crammed into a tiny spot and the Big Bang explosion sent the universe expanding and galaxies hurtling way into space away from each other. The force from the Big Bang that is believed to cause this expansion is dark energy.

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i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)