Hills are smaller and more rounded. Hills are deeper and more level. Hills are steeper and rockier. Hills are taller and snowy.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: In which ways are hills most different from mountains?
Possibilities:
- Hills are smaller and more rounded.
- Hills are deeper and more level.
- Hills are steeper and rockier.
- Hills are taller and snowy.

Hills are smaller and more rounded.