Name the process in which heat is transferred by the movement of a liquid (or gas) itself.

Options

A. conduction
B. convection
C. radiation
D. none of the above

Explanation

To answer the question, "Name the process in which heat is transferred by the movement of a liquid (or gas) itself," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Heat Transfer**:
- Heat can be transferred in three main ways: conduction, convection, and radiation. Each method has its own mechanism.

2. **Identifying the Relevant Process**:
- The question specifically asks about the movement of a liquid or gas. This indicates that we are looking for a process that involves the movement of these fluids.

3. **Explaining Convection**:
- In the case of liquids and gases, heat transfer occurs through the movement of the fluid itself. When a fluid is heated, the molecules move faster and tend to rise, while cooler, denser fluid moves down to take its place. This creates a circulation pattern.

4. **Conclusion**:
- The process by which heat is transferred by the movement of a liquid or gas is called **convection**.

### Final Answer:
The process in which heat is transferred by the movement of a liquid (or gas) itself is called **convection**.

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