Syphilis is a sexually transmitted disease caused by

Options

A. Pasteurella
B. Leptospira
C. Treponema pallidum
D. Vibrio

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks about the causative agent of syphilis, which is a sexually transmitted disease.

2. **Review the Options**: The options provided are:
- a) Pasturella
- b) Leptospira
- c) Trypanoma Pallidum
- d) Vibrio

3. **Analyze Each Option**:
- **Pasturella**: This organism is known to cause diseases in animals, such as snuffles in rabbits and pneumonia in sheep, but it is not associated with syphilis.
- **Leptospira**: This is a bacterium that causes leptospirosis, which is also not related to syphilis.
- **Trypanoma Pallidum**: This is the key organism to focus on, as it is specifically known to cause syphilis.
- **Vibrio**: The Vibrio species, particularly Vibrio cholerae, is known for causing cholera, which is a waterborne disease, not sexually transmitted.

4. **Conclusion**: Based on the analysis, the correct answer is **Trypanoma Pallidum**, as it is the organism responsible for causing syphilis.

**Final Answer**: Syphilis is caused by **Trypanoma Pallidum**.

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