The correct answer is option 'C' - Ball and socket joint.

Ball and socket joints are unique in that they allow movement in all directions. These joints are found in our bodies and provide a wide range of motion, allowing us to perform various activities and movements. Let's explore the characteristics and examples of ball and socket joints in more detail.

Characteristics of ball and socket joints:
- Structure: Ball and socket joints consist of a rounded end of one bone (ball) that fits into a cup-shaped cavity (socket) of another bone.
- Range of motion: These joints have the greatest range of motion compared to other types of joints, enabling movement in multiple directions, including rotation, flexion, extension, abduction, and adduction.
- Stability: The ball and socket joint provides stability due to the deep socket and the surrounding ligaments and muscles that support the joint.

Examples of ball and socket joints:
1. Shoulder joint: The shoulder joint is a classic example of a ball and socket joint. The rounded head of the humerus bone fits into the shallow socket of the scapula bone. This joint allows movements such as flexion, extension, abduction, adduction, and rotation of the arm.
2. Hip joint: The hip joint is another prominent example of a ball and socket joint. The rounded head of the femur bone fits into the deep socket of the pelvis bone. This joint permits movements like flexion, extension, abduction, adduction, and rotation of the leg.

Advantages of ball and socket joints:
- Wide range of motion: Ball and socket joints allow for a vast range of motion, facilitating movements required for daily activities and sports.
- Increased stability: The structure of ball and socket joints provides stability, preventing dislocation and ensuring proper alignment during movement.
- Weight-bearing capacity: Ball and socket joints are designed to bear weight, enabling us to walk, run, and perform weight-bearing activities.

Conclusion:
Ball and socket joints are unique in their ability to allow movement in all directions. The shoulder and hip joints are prominent examples of ball and socket joints in our bodies. These joints provide a wide range of motion, stability, and weight-bearing capacity, making them crucial for our everyday activities and movements.