The correct option is D Hinge
The humerus and the radioulna together form the elbow which is the hinge joint. The distal end of the humerus articulates the proximal end of the radius and ulna. The humeroulnar joint is also a part of the elbow and is a hinge joint whereas the proximal radioulnar and the distal radioulnar is a pivot joint. Thus, the correct answer is option D.