Question

1. the major evidence supporting the \big bang\ theory is a) observations of supernova explosions. b) the discovery of black holes. c) observations that most galaxies are rotating d) observations that the doppler red shift becomes greater as we look at more distant galaxies.

Explanation:

The Big - Bang theory suggests the universe originated from a singularity and has been expanding ever since. The Doppler red - shift of galaxies indicates that they are moving away from us, and the greater red - shift for more distant galaxies implies an expanding universe, which is a key piece of evidence for the Big - Bang. Supernova explosions, black holes, and galaxy rotation are important astronomical phenomena but are not the major evidence for the Big - Bang theory.

Answer:

D. observations that the Doppler red shift becomes greater as we look at more distant galaxies.