Dengue (the break-bone fever) is spread by

Options

A. Cu/ex mosquito
B. Male Anopheles mosquito
C. Anopheles
D. Female Aedes mosquito

Answer

**Step-by-Step Solution:**

1. **Understanding Dengue**: Dengue, also known as break-bone fever, is a viral infection caused by the dengue virus. It is important to know the nature of the disease and its causative agent.

2. **Identifying the Causative Agent**: The dengue virus belongs to the family of flaviviruses. This family includes several other viruses, but for dengue, the specific virus is the dengue virus.

3. **Transmission of Dengue**: The primary mode of transmission for dengue is through mosquito bites. It is crucial to identify which mosquito species is responsible for spreading the dengue virus.

4. **Identifying the Mosquito Species**: Among the options provided:
- Option A: QX mosquito (not a known vector for dengue)
- Option B: Male Anopheles mosquito (males do not bite and therefore do not transmit diseases)
- Option C: Anopheles (primarily known for malaria transmission)
- Option D: Female Aedes mosquito (known vector for dengue)

5. **Conclusion**: The correct answer is option D, as dengue is specifically spread by the female Aedes mosquito.

**Final Answer**: Dengue (the break-bone fever) is spread by the female Aedes mosquito (Option D).

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