Answer: Option A. "Arms"
Explanation:
Pectoral girdle is also known as shoulder girdle, are the bones that attach upper limb to the axial skeleton.
Pectoral girdle majorly functions to support arms. It contains two bones, the clavicle and scapula.
Pectoral girdle can also defined as the set of bones in the skeleton that connects to the arm on each side.
Hence, the correct option is A.
