Question

which of the following joints is an example of a ball - and - socket joint?
ankle
shoulder
wrist
knee
elbow

Explanation:

Ball - and - socket joints allow for a wide range of motion in multiple directions. The shoulder joint has a ball - like head of the humerus that fits into a socket - like glenoid cavity of the scapula, enabling such motion. The ankle is a hinge - like joint, the wrist is a condyloid joint, the knee is a hinge joint, and the elbow is a hinge joint.

Answer:

B. shoulder