Answer:
(C). sternum is a correct answer.
Step-by-step explanation:
The sternum is also called as the breastbone, it is present in the chest central part.
It is the longest and largest bones present in the body.
It protects the vital organ (heart, liver, and lungs) from the injury by forming a rib cage which is formed by the connection of rib to the cartilage.
Thus the rib cage which is form act as defenses if any injury occur.