Which evidence supports the idea that Cosmic Microwave Background radiation is a remnant of the Big Bang?(1 point)

Question

Responses

Its temperature is uniform.
Its temperature is uniform.

Its mass fluctuates greatly.
Its mass fluctuates greatly.

Its temperature fluctuates greatly.
Its temperature fluctuates greatly.

Its mass is uniform.

Answer 1

The evidence that supports the idea that Cosmic Microwave Background (CMB) radiation is a remnant of the Big Bang is:

Its temperature is uniform.

The uniformity of the CMB temperature across the universe suggests that it is a relic from the early stages of the universe, as the Big Bang theory predicts a nearly uniform distribution of thermal radiation that has cooled over time.