All matter gives off light. All matter is attracted by magnets. All matter is made of atoms. All matter dissolves in water.
I gave my students this multiple choice question: Which of these describes a property of all matter?

Only one answer is correct among these 4 choices:
- All matter gives off light.
- All matter is attracted by magnets.
- All matter is made of atoms.
- All matter dissolves in water.

Could you tell me which one is correct?

All matter is made of atoms.