The outermost layer of brain is called

Options

A. Parameter
B. Duramater
C. Pericardium
D. Grey matter

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the name of the outermost layer of the brain.

2. **Identifying the Options**: The options provided are:
- A) Parameter
- B) Durometer
- C) Pericardium
- D) Grey matter

3. **Analyzing Each Option**:
- **Parameter**: This term does not relate to the layers of the brain.
- **Durometer**: This is known to be one of the layers of the meninges, specifically the outermost layer.
- **Pericardium**: This is the membrane enclosing the heart, not related to the brain.
- **Grey matter**: This refers to the neuronal cell bodies in the brain and is not a layer.

4. **Conclusion**: The correct answer is **Durometer**, as it is the outermost layer of the brain.

5. **Final Answer**: The outermost layer of the brain is called **Durometer**.

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