Most common bacterial STD is:

Options

A. Chlamydiosis
B. Gonorrhoea
C. Syphilis
D. Genital Herpes

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the most common bacterial sexually transmitted disease (STD).

2. **Identifying Options**: The options provided include:
- Chlamydiosis
- Gonorrhea
- Syphilis
- Genital Herpes

3. **Analyzing Each Option**:
- **Chlamydiosis**: This STD is caused by the bacterium *Chlamydia*. It is known to be the most common bacterial STD.
- **Gonorrhea**: This is also a bacterial STD caused by *Neisseria gonorrhoeae*, but it is not as common as Chlamydiosis.
- **Syphilis**: Caused by the bacterium *Treponema pallidum*, it is less common compared to Chlamydiosis.
- **Genital Herpes**: This is caused by a virus (Herpes Simplex Virus), so it does not qualify as a bacterial STD.

4. **Conclusion**: Based on the analysis, Chlamydiosis is identified as the most common bacterial STD.

5. **Final Answer**: The most common bacterial STD is Chlamydiosis.

---