Question

which is evidence of universe expansion that supports the big bang theory? (1 point) the temperature of the universe has warmed over time. the temperature of the universe has cooled over time. the temperature of the universe is the same as it was at the time of the big bang. the temperature of the universe has cooled and warmed repeatedly over time.

Explanation:

The Big - Bang theory posits that the universe started from a hot, dense state. As the universe expands, it cools down. So, the cooling of the universe over time is evidence of its expansion and supports the Big - Bang theory.

Answer:

The temperature of the universe has cooled over time.