Salvarson is an antimicrobial agent which is used for curing

Options

A. Malaria
B. Allergy
C. Syphilis
D. Depression

Answer

**Step-by-Step Solution:**

1. **Understanding Salvarsan**: Salvarsan is an antimicrobial agent that was historically used to treat certain infections. It is particularly known for its use against specific bacterial infections.

2. **Identifying the Diseases**: The question provides four options: malaria, allergy, syphilis, and depression. We need to determine which of these diseases Salvarsan is used to treat.

3. **Analyzing the Options**:
- **Malaria**: This is a parasitic infection caused by Plasmodium species and is not treated with Salvarsan.
- **Allergy**: Allergies are immune responses to allergens and are not bacterial infections; thus, Salvarsan is not used for allergies.
- **Syphilis**: This is a sexually transmitted infection caused by the bacterium Treponema pallidum. Salvarsan is effective against this bacterium.
- **Depression**: This is a mental health condition and is not treated with antimicrobial agents like Salvarsan.

4. **Conclusion**: Based on the analysis, Salvarsan is specifically used for treating syphilis, which is a bacterial infection.

5. **Final Answer**: Salvarsan is an antimicrobial agent which is used for curing syphilis.

---