Which is a viral disease

Options

A. Tetanus
B. Dysentery
C. Typhoid
D. None of the above

Answer

To determine which is a viral disease among the given options, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Options**: The question presents four options, among which we need to identify the viral disease.

2. **Analyze Each Option**:
- **Option 1: Tetanus**: Tetanus is caused by the bacterium *Clostridium tetani*, making it a bacterial disease.
- **Option 2: Dysentery**: Dysentery can be caused by either a protozoan (*Entamoeba histolytica*) or bacteria, hence it is also a bacterial disease.
- **Option 3: Typhoid**: Typhoid is caused by the bacterium *Salmonella typhi*, which categorizes it as a bacterial disease.
- **Option 4: Viral Disease**: This option is not specified, but we need to confirm that it is indeed a viral disease.

3. **Identify Viral Diseases**: To confirm the correct answer, we can recall some common viral diseases:
- **AIDS**: Caused by the Human Immunodeficiency Virus (HIV).
- **Common Cold**: Caused by the Rhinovirus.
- **Hepatitis B**: Caused by the Hepatitis B Virus (HBV).

4. **Conclusion**: Since all the first three options are bacterial diseases, the correct answer must be the fourth option, which is a viral disease.

5. **Final Answer**: The correct answer is that the viral disease is represented by option 4.