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 is uniform.
Its mass is uniform.

Its mass fluctuates greatly.
Its mass fluctuates greatly.

Its temperature fluctuates greatly.

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 sky is one of the key pieces of evidence for the Big Bang theory, indicating that it is a relic from a hot, dense state of the early universe.