Outer most covering of brain is called :

Options

A. Choroid
B. Duramater
C. Piamater
D. Arachnoid

Answer

To answer the question about the outermost covering of the brain, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Options**: The question provides four options:
- a) Choroid
- b) Dura Mater
- c) Pia Mater
- d) Arachnoid

2. **Evaluate Each Option**:
- **Choroid**: This is the vascular layer of the eye, not related to the brain. Therefore, this option is incorrect.
- **Dura Mater**: This is the outermost layer of the meninges that cover the brain and spinal cord. This option is correct.
- **Pia Mater**: This is the innermost layer of the meninges, which is directly in contact with the brain. Therefore, this option is incorrect.
- **Arachnoid**: This is the middle layer of the meninges, situated between the dura mater and pia mater. Therefore, this option is also incorrect.

3. **Conclusion**: The correct answer is **Dura Mater**, as it is the outermost covering of the brain.

### Final Answer:
The outermost covering of the brain is called **Dura Mater**.