Which type of joints allow for movement in two different planes along two axes of the body?

The correct answer is the type of joint known as biaxial. Biaxial joints are characterized by their ability to allow movement in two different planes or along two axes. This movement can occur in two directions, such as flexion and extension, as well as abduction and adduction.

A prime example of a biaxial joint is the saddle joint, like the carpometacarpal joint of the thumb, which allows for both gripping and a degree of rotation. Another example is the condyloid joint, such as the wrist, which permits flexion, extension, and some lateral movement.

While triaxial, uniaxial, and multiaxial joints are all important in the human body for different types of motion, they either allow movement in more than two planes or are limited to certain movements. Therefore, the unique characteristic of biaxial joints is their specific ability to facilitate movement across two distinct planes simultaneously.