Select from: A). mercury; B). air; C). carbon; D). water;

Answer the following question given this paragraph: Water is the only substance on Earth that is present in all three states of matter. This means that water is present as a solid, liquid, and gas. Earth is the only planet where water is present in all three states. All three phases may be present in a single location or in a region. The three phases are solid (ice or snow), liquid (water), and gas ( water vapor ). See ice, water, and clouds pictured below ( Figure below ). Q: What is the only substance on earth that is present in all three states of matter? A:
Answer:
D).