Undeveloped wings are found in :

Options

A. Housefly
B. Cockroach
C. Mosquito
D. Blatta

Answer

### Step-by-Step Solution:

1. **Understand the Question**: The question asks about the presence of undeveloped wings in certain organisms. We need to identify which of the given options has undeveloped wings.

2. **Identify the Options**: The options provided are:
- Housefly
- Cockroach
- Mosquito
- Blatta

3. **Analyze Each Option**:
- **Housefly**: Houseflies have fully developed wings that allow them to fly.
- **Cockroach**: Cockroaches generally have wings, but the extent of their development can vary.
- **Mosquito**: Mosquitoes also possess fully developed wings for flying.
- **Blatta**: Blatta refers to a genus of cockroaches, specifically Blatta orientalis (the Oriental cockroach), which has vestigial (undeveloped) wings in females and short wings in males that do not reach the end of their bodies.

4. **Determine the Correct Answer**: Based on the analysis, the correct answer is **Blatta**, as it is known for having undeveloped wings in females.

5. **Conclusion**: The organism with undeveloped wings among the options is **Blatta**.