Final answer:
The manubrial groove is the correct answer as it is the depression in the manubrium of the sternum for articulation with the cartilage of the first rib. The correct option is c.
Step-by-step explanation:
Below each clavicular notch and SC (sternoclavicular joint) is a structure for articulation with the cartilage of the first rib.
The correct answer to this question is manubrial groove, which is a depression in the manubrium part of the sternum where the costal cartilage of the first rib attaches. This groove provides the articulation point and supports the sternoclavicular joint, indirectly supported by the costoclavicular ligament that spans the sternal end of the clavicle and the underlying first rib.
The sternal end of the clavicle is the medial end that articulates with the manubrium, forming the sternoclavicular joint between the pectoral girdle of the upper limb and the axial skeleton, encompassing the vertebral column.
Therefore, the correct option is c.