The joint between the human skull bones is :

Options

A. hinge joint
B. immovable joint
C. cartilaginous joint
D. synovial joint

Explanation

To determine the type of joint between the human skull bones, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Joint Type**: The joints between the bones of the human skull are classified as immovable joints.

2. **Understanding Immovable Joints**: Immovable joints, also known as fibrous joints, do not allow any movement between the bones. This is because the bones are tightly bound together by connective tissue.

3. **Location of Immovable Joints**: These joints are primarily found in the skull, where they serve to protect the brain by providing a rigid structure.

4. **Comparison with Other Joint Types**:
- **Hinge Joints**: These joints allow movement in one direction, like the elbow and knee.
- **Cartilaginous Joints**: These joints allow limited movement and are found in areas like the pubic symphysis.
- **Synovial Joints**: These joints are characterized by the presence of a synovial cavity and fluid, allowing for a wide range of movement, such as in the knee and shoulder.

5. **Conclusion**: Based on the definitions and characteristics of the joint types, the correct answer is that the joint between the human skull bones is an immovable joint.

### Final Answer:
The joint between the human skull bones is an **immovable joint**.

---