Joints are classified according to the

A) bones that are united at the joint.
B) structure of the joint.
C) size of the joint.
D) shape of the joint.
E) type of fluid in the joint.

Joint

A structure in the body where two or more bones meet, allowing for movement and support.

Structure

A composition or arrangement of parts or elements forming a complex or coherent whole.

Bones United

Refers to the process of bone healing or the fusion of bones, often after a fracture.