What is the primary function of a joint in the human body?

The primary function of a joint in the human body is to allow movement to the skeleton. Joints are the connections between bones, and they facilitate various types of movements such as bending, twisting, and rotating, which are essential for locomotion and daily activities. The design of each type of joint—such as hinge joints, ball-and-socket joints, and pivot joints—enables specific ranges of motion, contributing to the flexibility and functionality of the skeletal system.

While joints do play a role in supporting the body structure by connecting bones, their main purpose is to facilitate movement. Other options may describe related functions, such as providing stability or strength, but they do not capture the primary role of joints as effectively as the ability to allow movement.