Waterborne disease is

Options

A. dysentry
B. small pox
C. anaemia
D. brain fever

Explanation

**Step-by-Step Solution:**

1. **Understanding Waterborne Diseases**: Waterborne diseases are illnesses caused by pathogens that are transmitted through contaminated water. These pathogens can include viruses, bacteria, and parasites.

2. **Identifying the Options**: The options provided are:
- 1st: Dysentery
- 2nd: Smallpox
- 3rd: Anemia
- 4th: Brain Fever

3. **Analyzing Each Option**:
- **Dysentery**: This is a bacterial infection that affects the intestines and is commonly transmitted through contaminated water. It is indeed classified as a waterborne disease.
- **Smallpox**: This is a viral infection, but it is not transmitted through water; rather, it spreads through direct contact with infected individuals.
- **Anemia**: This is a condition characterized by a lack of healthy red blood cells, and it is not caused by waterborne pathogens.
- **Brain Fever**: This term typically refers to encephalitis, which can be caused by viruses but is not classified as a waterborne disease.

4. **Conclusion**: Based on the analysis, the only option that qualifies as a waterborne disease is Dysentery.

5. **Final Answer**: Therefore, the correct answer is **Dysentery**.

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