Crooked, stiffening?

Crooked, stiffening?

• A. Acr/o
• B. Osteoblast
• C. Ankyl/o
• D. Papilloma

Answer: (C)

Understanding combining forms that describe stiffness and fusion helps decipher prompts like this. The clue “Crooked, stiffening?” points to a root that means stiff, bent, or fused. Ankyl/o literally conveys stiffness or fusion of a joint, as seen in ankylosis, where joints become immobile due to stiffening. The other roots don’t match this idea: acr/o pertains to extremities, osteoblast is a bone-forming cell, and papilloma is a wart-like tumor. So ankyl/o is the best fit because it directly expresses the concept of stiffness and crookedness described in the prompt.

Understanding combining forms that describe stiffness and fusion helps decipher prompts like this. The clue “Crooked, stiffening?” points to a root that means stiff, bent, or fused. Ankyl/o literally conveys stiffness or fusion of a joint, as seen in ankylosis, where joints become immobile due to stiffening. The other roots don’t match this idea: acr/o pertains to extremities, osteoblast is a bone-forming cell, and papilloma is a wart-like tumor. So ankyl/o is the best fit because it directly expresses the concept of stiffness and crookedness described in the prompt.