claiming Earth is in orbit about the Sun. inventing, then improving, the telescope. writing the theory of the infinite universe. showing planetary orbits are elliptical.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Copernicus changed the way people viewed the solar system by
Possibilities:
- claiming Earth is in orbit about the Sun.
- inventing, then improving, the telescope.
- writing the theory of the infinite universe.
- showing planetary orbits are elliptical.

claiming Earth is in orbit about the Sun.