Soap lather is an example of :

Explanation

To solve the question "Soap lather is an example of:", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Soap Lather**:
- Soap lather is the frothy substance that forms when soap is mixed with water and agitated.

2. **Identifying the Components**:
- In soap lather, we have a liquid (water) and gas (air) present. The soap helps to stabilize the mixture.

3. **Defining Foam**:
- Foam is defined as a colloidal system where gas is dispersed in a liquid. In this case, the gas (air) is trapped in the liquid (water) due to the presence of soap.

4. **Analyzing the Dispersion**:
- In the case of soap lather, the dispersion medium is the liquid (water), and the dispersed phase is the gas (air).

5. **Conclusion**:
- Since soap lather consists of gas bubbles dispersed in a liquid, it qualifies as foam. Therefore, we can conclude that soap lather is an example of foam.

### Final Answer:
Soap lather is an example of foam.

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