Answer:
The correct answer is option D, that is, Sun.
Step-by-step explanation:
The celestial body is a term, which is as expansive as the whole universe, that is, both unknown and known. A celestial body by definition refers to any natural body external to the atmosphere of the Earth. Some of the examples are the Sun, Moon and the other planets of the solar system. The Kuiper belt comprises various celestial bodies. In the given question, of the mentioned options, Sun is an example of a celestial body that radiates energy.