The sound above............ is painful.

Options

A. 20 dB
B. 40 dB
C. 60 dB
D. 80 dB

Explanation

To solve the question "The sound above __________ is painful," we need to determine the sound level in decibels (dB) that is considered painful to the human ear.

### Step-by-Step Solution:

1. **Understanding Sound Levels**:
- Sound is measured in decibels (dB). The human ear can detect a wide range of sound levels, from very quiet sounds to very loud sounds.

2. **Identifying Painful Sound Levels**:
- Generally, sounds above a certain threshold can cause discomfort or pain. Research indicates that sounds above 80 dB can be painful to hear.

3. **Evaluating the Options**:
- The options provided are:
- 20 decibels
- 40 decibels
- 60 decibels
- 80 decibels
- Among these, 80 dB is the threshold where sound starts to become painful.

4. **Conclusion**:
- Therefore, the answer to the question is that sound above **80 decibels** is considered painful.

### Final Answer:
The sound above **80 decibels** is painful.

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