Humans, apes, cats, dogs, and more share a large, hollow chest cavity protected by ribs. These ribs serve similar functions in each animal to allow for breathing and to protect vital organs. Ribs, as described here, are most likely examples of what type of structure?

Answer: homologous structure

Homologous structures

Explanation:

Homologous structures are parts of the body or bones that are found in seemingly different animals, but they are similar in structure and can be similar in function as well. Homologous structures indicate that these different species descended from a common ancestor.