The shoulder and hip joints are

Options

A. Pivot joint
B. Hinge joint
C. Ellipsoid joint
D. Ball and socket joint

Answer

### Step-by-Step Solution:

1. **Identify the Joints in Question**: The question asks about the shoulder and hip joints.

2. **Understand Joint Types**: There are various types of joints in the human body, including pivot joints, hinge joints, ellipsoid joints, and ball and socket joints.

3. **Define Ball and Socket Joint**: A ball and socket joint is characterized by a spherical head of one bone fitting into a cup-like cavity of another bone. This structure allows for a wide range of motion.

4. **Movement Capabilities**: The ball and socket joint permits multi-axial movements, meaning it allows movement in multiple directions. This includes:
- Rotation
- Lateral rotation
- Abduction (movement away from the midline)
- Adduction (movement towards the midline)
- Circumduction (circular movement)

5. **Examples of Ball and Socket Joints**: The shoulder joint (glenohumeral joint) and the hip joint (acetabulofemoral joint) are prime examples of ball and socket joints.

6. **Conclusion**: Based on the characteristics and functions of the shoulder and hip joints, we can conclude that they are classified as ball and socket joints.

### Final Answer:
The shoulder and hip joints are **ball and socket joints** (Option 4).

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