Which one of the following correctly matches the Sexually Transmitted Disease (STD)with its pathogen?

Options

A. AIDS- Bacillus anthracis
B. syphilis-Treponema pallidum
C. Urethritis-Entamoeba gingivalis
D. Gonorrhea- Leishmania donovani

Answer

To solve the question of matching the Sexually Transmitted Disease (STD) with its pathogen, we can follow these steps:

### Step 1: Understand the Question
The question asks us to identify which pair correctly matches an STD with its corresponding pathogen.

### Step 2: Analyze Each Option
We will go through each option provided in the question:

1. **AIDS** - The pathogen for AIDS is HIV (Human Immunodeficiency Virus), not Bacillus anthracis. So this option is incorrect.

2. **Syphilis** - The pathogen for Syphilis is Treponema pallidum. This is a correct match.

3. **Urethritis** - Urethritis is an inflammation of the urethra, and its common pathogen is Neisseria gonorrhoeae, not Entamoeba gingivalis. So this option is incorrect.

4. **Gonorrhea** - The pathogen for Gonorrhea is also Neisseria gonorrhoeae, not Leishmania donovani. So this option is incorrect.

### Step 3: Identify the Correct Match
From our analysis, the only correct match is:
- **Syphilis** with **Treponema pallidum**.

### Step 4: Conclusion
Thus, the correct answer to the question is:
**Option B: Syphilis and Treponema pallidum.**

---