The standard Big Bang model:. a. states that the universe has expanded and cooled over time. It predicts Hubble's law and the relative abundances of the light elements, but cannot explain the existence of the CMBR.
b. states that the universe has expanded and cooled over time. It predicts the existence of the CMBR, Hubble's law, and the relative abundances of the light elements.
c. states that the universe experienced a brief but tremendous expansion early in its history.
d. states that the universe has always been dominated by matter.