A body produces sound only if it is

Options

A. made of steel
B. made of glass
C. plucked
D. vibrating

Explanation

To answer the question "A body produces sound only if it is...", we can break down the solution into the following steps:

### Step-by-Step Solution:

1. **Understanding Sound Production**:
- Sound is produced when a body vibrates. These vibrations create waves in the surrounding medium (like air), which we perceive as sound.

2. **Identifying the Requirement for Sound**:
- For any object to produce sound, it must undergo some form of vibration. Without vibration, there will be no sound produced.

3. **Analyzing the Options**:
- If we consider different materials (like steel, glass, etc.), they can produce sound only when they vibrate.
- For example, if a steel body vibrates, it will produce sound. Similarly, a glass body will also produce sound when it vibrates.

4. **Conclusion**:
- Therefore, the correct statement is: "A body produces sound only if it is vibrating."

### Final Answer:
A body produces sound only if it is **vibrating**.

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