Sound is produced when a body............

Explanation

**Step-by-Step Solution:**

1. **Understanding Sound Production**: Sound is a type of mechanical wave that is produced when an object vibrates.

2. **Vibration of a Body**: When a body (like a string, drum, or vocal cords) vibrates, it causes the surrounding medium (air, water, etc.) to also vibrate.

3. **Medium Propagation**: The vibrations created by the vibrating body are transferred to the atoms and molecules of the surrounding medium. This transfer of energy allows the sound waves to travel through the medium.

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