Emmanuel has severe pain when he tries to sit down because he has bruised a bone. Which bone did he MOST likely bruise?

The coccyx, or tailbone, is at the base of the spine and can be bruised in a fall, making sitting painful. The tibia is in the lower leg, the radius is in the forearm, and the fontanelle is a soft spot in an infant’s skull. Therefore, the most likely answer is his coccyx.

AI-written and checked against the verified answer.