A species facing extremely high risk of extinction in the immediate future is called:

Options

A. Extinct
B. Vulnerable
C. Endemic
D. Critically Endangered

Answer

To answer the question, "A species facing extremely high risk of extinction in the immediate future is called:", we will analyze the provided options step by step.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the term used to describe a species that is at an extremely high risk of extinction in the near future.

2. **Evaluating Option 1 - Extinct**:
- Extinct species are those that no longer have any living individuals. Since the question refers to species that are still in existence but at high risk, this option is incorrect.

3. **Evaluating Option 2 - Vulnerable**:
- Vulnerable species are those that are at risk of becoming endangered due to unfavorable conditions. However, they are not necessarily at an extremely high risk of extinction in the immediate future. Therefore, this option is also incorrect.

4. **Evaluating Option 3 - Endemic**:
- Endemic species are those that are native to a specific geographical area and are not found anywhere else. This term does not relate to the risk of extinction, so this option is incorrect as well.

5. **Evaluating Option 4 - Critically Endangered**:
- Critically endangered species are those that are facing an extremely high risk of extinction in the immediate future. This definition aligns perfectly with the question asked, making this option the correct answer.

### Conclusion:
The correct answer to the question is **Critically Endangered**.

---