Sound waves do not travel through

Options

A. solids
B. gases
C. liquids
D. vacuum

Explanation

**Step-by-Step Solution:**

1. **Understanding Sound Waves**: Sound waves are mechanical waves that require a medium (solid, liquid, or gas) to travel. They cannot propagate through a vacuum because there are no particles to transmit the sound.

2. **Identifying the Mediums**: Sound can travel through different states of matter:
- **Solid**: Sound waves travel well through solids because the particles are closely packed, allowing for efficient transmission of vibrations.
- **Liquid**: Sound waves can also travel through liquids, though not as efficiently as in solids.
- **Gas**: Sound waves can travel through gases, but the transmission is less efficient compared to solids and liquids due to the larger spaces between particles.

3. **Understanding Vacuum**: A vacuum is a space devoid of matter, meaning there are no particles to carry the sound waves. Therefore, sound cannot travel through a vacuum.

4. **Conclusion**: Based on the above points, the correct answer to the question "Sound waves do not travel through" is **vacuum**.

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