A prolonged exposure to noise at 95 dB produce

Options

A. respiratory trouble
B. skin cancer
C. nervous tension and increased blood pressure
D. digestive spasm

Explanation

### Step-by-Step Solution:

1. **Understanding Noise Levels**:
- Noise is defined as unwanted or undesired sound, which is measured in decibels (dB). The human range of hearing is typically up to 120 dB, beyond which it can be harmful.

2. **Identifying the Impact of Prolonged Exposure**:
- Prolonged exposure to high levels of noise, such as 95 dB, can have various adverse effects on health.

3. **Effects of 95 dB Noise Exposure**:
- **Deafness**: Continuous exposure to noise at this level can lead to hearing loss or deafness.
- **Nervous Tension**: High noise levels can cause stress and anxiety, leading to nervous tension.
- **Rise in Blood Pressure**: Chronic exposure to noise can elevate blood pressure, potentially due to increased cholesterol levels in the blood.

4. **Evaluating the Options**:
- The question provides several options regarding the effects of prolonged exposure to 95 dB noise.
- Upon evaluating:
- Respiratory trouble: Not typically associated with noise exposure.
- Cancer: No direct link established with noise exposure.
- Nervous tension and increased blood pressure: This is consistent with the known effects of prolonged noise exposure.
- Digestive spasm: Not a recognized effect of noise exposure.

5. **Conclusion**:
- Based on the analysis, the correct answer is that prolonged exposure to noise at 95 dB produces nervous tension and increased blood pressure.

### Final Answer:
- Prolonged exposure to noise at 95 dB produces nervous tension and increased blood pressure.

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