Select the odd one w.r.t causative agent.

Options

A. Typhoid
B. Pneumonia
C. Ringworms
D. Plague

Answer

To solve the question of selecting the odd one out with respect to the causative agent, we will analyze each option provided: Typhoid, Pneumonia, Plague, and Ringworm.

### Step-by-Step Solution:

1. **Identify the causative agents of each disease:**
- **Typhoid:** Caused by the bacterium *Salmonella typhi*.
- **Pneumonia:** Caused by various bacteria, commonly *Streptococcus pneumoniae*.
- **Plague:** Caused by the bacterium *Yersinia pestis*.
- **Ringworm:** Caused by fungi, specifically dermatophytes (e.g., *Trichophyton* species).

2. **Categorize the diseases based on their causative agents:**
- **Bacterial Diseases:**
- Typhoid (bacterial)
- Pneumonia (bacterial)
- Plague (bacterial)
- **Fungal Disease:**
- Ringworm (fungal)

3. **Compare the categories:**
- Three diseases (Typhoid, Pneumonia, and Plague) are caused by bacteria.
- One disease (Ringworm) is caused by fungi.

4. **Identify the odd one out:**
- Since Ringworm is the only disease caused by a fungal agent while the others are caused by bacterial agents, it is the odd one out.

5. **Conclusion:**
- The answer to the question is **Ringworm**.

### Final Answer:
The odd one out with respect to the causative agent is **Ringworm**.

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