These cranial bone are unpaired :-

Options

A. Frontal, Temporal
B. Frontal, occipital
C. Frontal, parietal
D. Temporal, parietal

Answer

To determine which cranial bones are unpaired, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Cranial Bones**: Cranial bones are the bones that form the skull, protecting the brain and supporting the structures of the face.

2. **List the Cranial Bones**: The main cranial bones include:
- Frontal
- Parietal (2)
- Temporal (2)
- Occipital
- Sphenoid
- Ethmoid

3. **Identify Paired vs. Unpaired Bones**:
- **Paired Bones**: Parietal (2) and Temporal (2) bones are paired, meaning there are two of each.
- **Unpaired Bones**: The bones that are unpaired are those that only have one of each in the skull. These include:
- Frontal (1)
- Occipital (1)
- Sphenoid (1)
- Ethmoid (1)

4. **Conclusion**: From the list, the unpaired cranial bones are:
- Frontal
- Occipital
- Sphenoid
- Ethmoid

5. **Final Answer**: The unpaired cranial bones are Frontal and Occipital.