How does weak background radiation coming from every direction in the sky support the Big Bang Theory?(1 point)

Question

Responses

It provides evidence of the universe's increasing mass.
It provides evidence of the universe's increasing mass.

It provides evidence of the universe's decreasing mass.
It provides evidence of the universe's decreasing mass.

It provides evidence of universe expansion.
It provides evidence of universe expansion.

It provides evidence of universe contraction.

Answer 1

It provides evidence of universe expansion.

The weak background radiation, known as the Cosmic Microwave Background (CMB) radiation, is a remnant of the early hot phases of the universe shortly after the Big Bang. Its uniformity and temperature support the idea that the universe has been expanding since then.