Question

which term means \inflammation of the cartilage that connects a rib to the sternum\? osteoarthritis osteochondroma costochondritis chondromalacia

Explanation:

The word "costochondritis" is composed of "costo -" referring to rib, "chondro -" referring to cartilage, and "-itis" which means inflammation. So it means inflammation of the cartilage connecting a rib to the sternum. Osteoarthritis is joint inflammation, osteochondroma is a benign bone - cartilage tumor, and chondromalacia is softening of cartilage.

Answer:

C. costochondritis