Question

Alex reads about the big bang theory, which explains that the universe expanded *

as the result of an explosion. He wants to evaluate whether this theory is a good
one. Which statement is a characteristic of a good scientific theory?

It is the idea of one astronomer.

It does not change as time passes.

It is not supported by scientific evidence.

It changes with new observations made by astronomers.

Answer 1

B. This supports it the best because bad theories change over times, and saying it has no evidence will make it worse.

Answer 2

In my opinion, the last option is "It changes with new observations made by astronomers". is correct as many new theories are still being made so many new things can be added later on.

Step-by-step explanation:

hope it helps