Name a sea-bird which cannot fly.

Options

A. penguin
B. Fulmar
C. Tropicbird
D. Gannet

Explanation

**Step-by-Step Solution:**

1. **Identify the Category**: The question asks for a specific type of bird, which is a seabird that cannot fly.

2. **List Possible Options**: The options given are:
- Panguin
- Fulmar
- Tropic bird
- Gannet

3. **Analyze Each Option**:
- **Panguin**: Known for being a seabird that cannot fly. They are adapted to cold climates and have wings that are used for swimming rather than flying.
- **Fulmar**: A seabird that can fly.
- **Tropic bird**: Another seabird that is capable of flight.
- **Gannet**: Also a seabird that can fly.

4. **Conclusion**: Among the listed options, the only seabird that cannot fly is the **Panguin**.

5. **Final Answer**: The seabird that cannot fly is the **Panguin**.

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