Which does the big bang theory describe? a cool, dark singularity the origin of the universe the contraction of the universe an explosion at the beginning of time

The correct answer is B. The origin of the universe.

Explanation

The Big Bang Theory is the most popular theory about the origin of the universe, in which it is stated that the universe is the result of the great explosion of an initial particle. After this explosion, their materials expanded forming the universe. The union of atomic particles was what originated the planets, stars, and galaxies. Modern measurements place this moment of the Big Bang explosion 13,800 million years ago. The correct answer is B. The origin of the universe.