use the options below to complete the sentence.

Question

The ______ Theory believes around 13.7 billion years ago the universe was a single point. The point ______ due to heat and density. Then the temperature and density decreased and the universe cooled.
a gravity
b heliocentric
c big bang
d expanded

Answer 1

The c) Big Bang Theory believes around 13.7 billion years ago the universe was a single point. The point d) expanded due to heat and density. Then the temperature and density decreased and the universe cooled.