Select from the following a group of diseases caused by mosquitoes.

Options

A. (a)Dengue, malaria, chikun gunya
B. (b)Malaria, cholera, typhoid
C. (c)Malaria, dengue, cholera
D. (d)Malaria, chikungunya, typhoid

Answer

To solve the question of identifying a group of diseases caused by mosquitoes, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: We need to select a group of diseases that are specifically caused by mosquitoes from the given options.

2. **Identify the Diseases**: We will analyze each option provided to see if the diseases listed are caused by mosquitoes.

3. **Evaluate Option A**:
- **Dengue**: This disease is caused by the Aedes aegypti mosquito.
- **Malaria**: This disease is caused by the Anopheles mosquito.
- **Chikungunya**: This disease is also caused by Aedes aegypti and Aedes albopictus mosquitoes.
- Conclusion: All three diseases listed in option A are caused by mosquitoes.

4. **Evaluate Option B**:
- **Malaria**: Correctly identified as caused by mosquitoes.
- **Cholera**: Caused by bacteria, not mosquitoes.
- **Typhoid**: Also caused by bacteria, not mosquitoes.
- Conclusion: Option B cannot be correct since it includes diseases not caused by mosquitoes.

5. **Evaluate Other Options**: If there are other options (not mentioned in the transcript), we would similarly analyze them to check if they contain diseases caused by mosquitoes.

6. **Final Conclusion**: Since option A contains all diseases caused by mosquitoes (Dengue, Malaria, and Chikungunya) and option B includes diseases that are not caused by mosquitoes, we conclude that option A is the correct answer.

### Final Answer:
**The correct answer is Option A: Dengue, Malaria, and Chikungunya.**

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