What bone forms the front of the rib cage and connects the ribs via costal cartilage?

• A. Sternum
• B. Occipital bone
• C. Clavicle
• D. Scapula

Answer: (A)

This question focuses on identifying the bone that forms the front of the rib cage and connects to the ribs through costal cartilage. That bone is the sternum, a flat central chest bone made up of the manubrium, body, and xiphoid process. It provides the anterior attachments for the first seven pairs of ribs via their costal cartilages, giving the rib cage its front structure and allowing expansion during breathing. The clavicle (collarbone) does connect to the sternum at the sternoclavicular joint but does not form the front of the rib cage. The occipital bone is part of the skull at the back/bottom, and the scapula is the shoulder blade on the back. Hence, the sternum is the correct bone.