Answer:
Liters
Explanation:
Among the options provided:
- **mm Hg** (millimeters of mercury) is a unit used to measure pressure, often used in meteorology and medicine.
- **Pascals** is a unit of pressure in the International System of Units (SI), defined as one newton per square meter.
However,
- **Liters** is not a unit of pressure. It is a unit of volume.
Therefore, the correct answer is:
**○ Liters**
