consisting of billions of galaxies. being less than two billion years old. containing approximately ten planets. becoming smaller over time.
I gave my students this multiple choice question: A scientific article about the universe will most likely describe the universe as

Only one answer is correct among these 4 choices:
- consisting of billions of galaxies.
- being less than two billion years old.
- containing approximately ten planets.
- becoming smaller over time.

Could you tell me which one is correct?

consisting of billions of galaxies.