Black lung disease is common in:

Options

A. farmers
B. workers of textile industries
C. coal miners
D. refinery workers

Answer

**Step-by-Step Solution:**

1. **Understanding Black Lung Disease**: Black Lung Disease, also known as pneumoconiosis, is a lung disorder caused by the inhalation of coal dust. It primarily affects individuals who are exposed to coal dust over a long period.

2. **Identifying the Source of Exposure**: The disease is specifically linked to coal dust exposure. Therefore, we need to consider occupations where individuals are likely to be exposed to coal dust.

3. **Analyzing the Options**:
- **Option 1: Farmers** - Farmers are not typically exposed to coal dust as part of their work environment.
- **Option 2: Workers of the textile industries** - Textile workers are exposed to fibers and dust, but not specifically coal dust.
- **Option 3: Coal miners** - Coal miners work directly with coal and are exposed to coal dust, making them the most likely group to develop Black Lung Disease.
- **Option 4: Refinery workers** - While refinery workers may be exposed to various chemicals, they are not specifically associated with coal dust exposure.

4. **Conclusion**: Given the analysis, the group most commonly affected by Black Lung Disease is coal miners, as they are directly exposed to coal dust in their work environment.

5. **Final Answer**: The correct answer is **Option 3: Coal miners**.

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