An example of a ball-and-socket joint is the

The correct answer could be -  shoulder joint.

Explanation:

The ball and socket joint is a synovial joint in which a semi-spherical or round end bone attached to a cup-like groove structure of bone. Such joints are present in the bones of limbs for maximum proximity and movements such as hip joint and shoulder joint.

The shoulder joint is a ball and socket joint in which humerus acts as the ball because of it as a round end which rests in the cup shape groove called glenoid fossa that is a socket.

Thus, the correct answer could be - shoulder joint.

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