Which is a viral disease?

Options

A. Tetanus
B. Dysentery
C. Typhoid
D. Polio

Answer

**Step-by-Step Solution:**

1. **Identify the Options**: The question provides four options: Tetanus, Dysentery, Typhoid, and Polio.

2. **Evaluate Tetanus**:
- Tetanus is caused by the bacterium *Clostridium tetani*.
- Since it is bacterial in nature, Tetanus is not a viral disease.

3. **Evaluate Dysentery**:
- Dysentery, specifically amoebic dysentery, is caused by the protozoan *Entamoeba histolytica*.
- As it is caused by a protozoan, Dysentery is not a viral disease.

4. **Evaluate Typhoid**:
- Typhoid fever is caused by the bacterium *Salmonella typhi*.
- Therefore, Typhoid is also not a viral disease.

5. **Evaluate Polio**:
- Polio, or poliomyelitis, is caused by the poliovirus.
- Since it is caused by a virus, Polio is classified as a viral disease.

6. **Conclusion**: Among the options provided, Polio is the only viral disease.

**Final Answer**: Polio

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