Black Hole is

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks for the definition or description of a black hole. The options provided are:
- A) Super surface of atmosphere
- B) Ozone layer
- C) Super dense planetary material
- D) None of these

2. **Analyzing the Options:**
- Option A (Super surface of atmosphere) does not relate to black holes, as black holes are astronomical objects and not related to atmospheric layers.
- Option B (Ozone layer) is a part of Earth's atmosphere that protects us from harmful UV radiation, which is also unrelated to black holes.
- Option C (Super dense planetary material) is a potential candidate, as black holes are indeed formed from the remnants of massive stars that have undergone gravitational collapse.
- Option D (None of these) would only be correct if none of the other options were accurate.

3. **Identifying the Correct Option:**
Black holes are formed when a massive star exhausts its nuclear fuel and undergoes a supernova explosion, leading to the collapse of its core. This results in a region of space where the gravitational pull is so strong that nothing, not even light, can escape from it. Therefore, the correct description of a black hole is "super dense planetary material."

4. **Conclusion:**
Based on the analysis, the correct answer is:
- **C) Super dense planetary material**