Both have grass at the top. Both are at least 1000 meters tall. Both have liquid rock at their centers. Both are taller than the land around them.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: A mountain range has hills around its edges. How are the mountains and hills alike?
Possibilities:
- Both have grass at the top.
- Both are at least 1000 meters tall.
- Both have liquid rock at their centers.
- Both are taller than the land around them.

Both are taller than the land around them.