Find the correct pair out

Options

A. Aedes-malaria
B. Xenospylla-plague
C. Aedes-black fever
D. Anopheles - kala-azar

Answer

To solve the question "Find the correct pair out," we need to analyze the given options and identify the correct vector-disease pairs.

### Step-by-Step Solution:

1. **Understand the Options**: We have four options to evaluate:
- Option 1: Aedes - Malaria
- Option 2: Xenospila - Plague
- Option 3: Aedes - Black Fever
- Option 4: Anopheles - Kala Hazar

2. **Evaluate Option 1 (Aedes - Malaria)**:
- Aedes is a genus of mosquitoes known for transmitting diseases like dengue and Zika, but it is not the vector for malaria. Malaria is transmitted by Anopheles mosquitoes.
- **Conclusion**: This pair is incorrect.

3. **Evaluate Option 2 (Xenospila - Plague)**:
- Xenospila is a genus that includes fleas, specifically the Oriental rat flea, which is known to transmit the plague (Yersinia pestis).
- **Conclusion**: This pair is correct.

4. **Evaluate Option 3 (Aedes - Black Fever)**:
- Black Fever, also known as Kala Azar, is primarily transmitted by the sandfly, not Aedes mosquitoes.
- **Conclusion**: This pair is incorrect.

5. **Evaluate Option 4 (Anopheles - Kala Hazar)**:
- Anopheles mosquitoes are known vectors for malaria, not Kala Azar. Kala Azar is transmitted by sandflies.
- **Conclusion**: This pair is incorrect.

6. **Final Conclusion**: The only correct pair among the options provided is Option 2: Xenospila - Plague.

### Final Answer:
The correct pair is **Xenospila - Plague**.