Question

question 1
which of the following is considered evidence in favor of the big bang theory?
the fact that the universe is about 75% h, 25% he, as predicted
the existence of superclusters & voids, as predicted
the presence of dark matter & dark energy
the fact that white dwarf supernovae are great standard candles

Explanation:

The Big - Bang theory predicts the primordial abundance of light elements. The fact that the universe is about 75% hydrogen (H) and 25% helium (He) by mass is in line with the predictions of Big - Bang nucleosynthesis. Superclusters and voids are related to large - scale structure formation but not a direct unique evidence for the Big Bang. Dark matter and dark energy are more related to the expansion rate and gravitational effects in the universe, not direct evidence for the Big Bang. White dwarf supernovae being standard candles is useful for measuring cosmic distances, not direct evidence for the Big Bang.

Answer:

the fact that the universe is about 75% H, 25% He, as predicted