Venus, Earth, Mercury, Mars Earth, Mars, Venus, Mercury Mars, Mercury, Earth, Venus Mercury, Mars, Venus, Earth
I gave my students this multiple choice question: Which lists the diameter of the planets in order from smallest to largest?

Only one answer is correct among these 4 choices:
- Venus, Earth, Mercury, Mars
- Earth, Mars, Venus, Mercury
- Mars, Mercury, Earth, Venus
- Mercury, Mars, Venus, Earth

Could you tell me which one is correct?

Mercury, Mars, Venus, Earth