Final answer:
The sternoclavicular joint is a synovial joint, which allows for a wide range of motion and contains a synovial cavity, distinguishing it from fibrous and cartilaginous joints. The correct option is a) Synovial Joint
Step-by-step explanation:
The type of joint found between the sternum and clavicles is a synovial joint. Specifically, it is the sternoclavicular joint. Unlike fibrous or cartilaginous joints, synovial joints have a synovial cavity. The sternoclavicular joint provides a wide range of motion, including gliding and some rotational and angular movements, characteristic of synovial joints.
Two other types of cartilaginous joints include synchondroses and symphyses, where bones are united by hyaline cartilage or fibrocartilage, respectively. An example of synchondrosis would be the joint between the anterior end of a rib and the costal cartilage of the thoracic cage, while the pubic symphysis is an example of a symphysis.
Synovial joints like the sternoclavicular joint are highly mobile, which contrasts with the limited movement offered by fibrous joints such as sutures in the skull or somewhat more mobile cartilaginous joints like symphyses. The correct option is a) Synovial Joint.