They are all solids. They are all liquids. They are all minerals. They are all elements.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: What do ice, a rock, and a piece of aluminum have in common?
Possibilities:
- They are all solids.
- They are all liquids.
- They are all minerals.
- They are all elements.

They are all solids.