How does weak background radiation coming from every direction in the sky support the Big Bang Theory?(2 points)

Question

Responses

it provides evidence of the universe's increasing mass
it provides evidence of the universe's increasing mass

it provides evidence of universe contraction
it provides evidence of universe contraction

it provides evidence of the universe's decreasing mass
it provides evidence of the universe's decreasing mass

it provides evidence of universe expansion

Answer 1

The correct response is:

it provides evidence of universe expansion.

Weak background radiation, specifically the Cosmic Microwave Background (CMB) radiation, is a remnant of the heat from the Big Bang. Its uniformity and presence from all directions support the idea that the universe has been expanding since its inception.