Find the odd one out

Options

A. HIV
B. Trichomoniasis
C. Gonorrhoea
D. Typhoid

Explanation

**Step-by-Step Solution:**

1. **Identify the Options**: The question provides four options: HIV, trichomoniasis, gonorrhea, and typhoid.

2. **Analyze Each Option**:
- **HIV**: This is the human immunodeficiency virus, which causes AIDS. It is a sexually transmitted disease (STD).
- **Trichomoniasis**: This is caused by the protozoan Trichomonas vaginalis. It is also classified as an STD.
- **Gonorrhea**: This is caused by the bacterium Neisseria gonorrhoeae. It is another example of an STD.
- **Typhoid**: This is caused by the bacterium Salmonella typhi. It is not an STD; it is transmitted through contaminated food and water.

3. **Determine the Odd One Out**:
- The first three options (HIV, trichomoniasis, and gonorrhea) are all sexually transmitted diseases.
- The fourth option, typhoid, is not an STD and is spread through contaminated food and water.

4. **Conclusion**: The odd one out is **typhoid** because it is not a sexually transmitted disease, unlike the other three options.

**Final Answer**: Typhoid

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