Explanation:

- The more common name for solid carbon dioxide is Dry Ice. It sublimates directly from a solid to a gas at temperatures above -78.5 °C.

- Epsom refers to Epsom salt, which is magnesium sulfate. It’s commonly used in baths and as a magnesium supplement.

- Potash is a name for various mined and manufactured salts that contain potassium in water-soluble form. It's used mainly as a fertilizer.

- Quicksilver is another name for mercury, which is a liquid metal at room temperature.

Option 2: Dry Ice