Which of the following joint movements from the anatomical position has an average range of motion of 0 degrees in healthy adults?
a. lumbar rotation. b. elbow extension. c. subtalar inversion. d. hip extension.

The correct option is B: Elbow extension

Explanation:

The elbow is a very complex joint in the human body and it comprises of the proximal radioulnar, the humeroradial, and the humeroulnar; three entirely different articulations. The elbow is most times subjected to a great deal of weighty loads and thus must have the potential perform certain functions. The elbow's range of motion start approximately at 0 degrees of extension and 140 degrees of flexion in healthy adults.

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