Which of these celestial bodies forms the centre of any solar system?

Options

A. Planet
B. Asteroid
C. Comet
D. Star

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which celestial body is at the center of any solar system.

2. **Identifying Key Characteristics**: In any solar system, the central body is the one that has the most mass. This mass creates a strong gravitational pull.

3. **Recognizing the Central Body**: The celestial body that has the most mass in a solar system is typically a star.

4. **Specific Example**: In our solar system, the star at the center is the Sun.

5. **Understanding the Role of the Star**: The Sun's gravitational force is what keeps the planets, asteroids, and comets in orbit around it.

6. **Conclusion**: Therefore, the answer to the question is that the celestial body that forms the center of any solar system is a star. In our case, that star is the Sun.

**Final Answer**: The answer is a star (specifically, the Sun in our solar system).

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