A condition of stiffening of a joint is:
A) acetabulum.
B) achondroplasia.
C) arthralgia.
D) ankylosis.
D
Explanation:
A) The acetabulum is the cup-shaped socket in the pelvis that contains the head of the femur.
B) Achondroplasia is a defect of the cartilage at the end of long bones.
C) Arthralgia is joint pain.
D) Correct.
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