Name the property which opposes the flow of liquids.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the property that opposes the flow of liquids. This requires us to think about how liquids behave when they are in motion.

2. **Identifying the Property**: The property that opposes the flow of liquids is known as "viscosity." Viscosity is a measure of a fluid's resistance to flow.

3. **Explaining Viscosity**: Viscosity arises due to internal friction between the layers of liquid. When a liquid flows, different layers of the liquid move at different speeds. The layer in contact with a surface (like the ground) moves the slowest, while layers further away can move faster.

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