Answer:
Option D, ribs
Explanation:
The axial skeleton is the centermost bones of the skeletal system, surrounding and protecting some of, if not all of the essential, vital organs. This distinction of the skeletal bones includes the skull, the inner ear bones, the vertebrae of the spinal column, the rib cage, and the hyoid bone. These bones protect the brain, spinal cord, heart, lungs, and most of the liver.
The bones of and attached to the periphery are considered parts of the appendicular skeleton. It includes everything else not included in the axial skeleton, which encompasses options A, B, and C in the given question. The bones of the arms and legs, including the hands, feet, and hip bones (pelvic girdle); the shoulder bones; and the clavicles are bones of the appendages.
Thus, the axial skeleton includes the ribs, option D.
The axial skeleton includes the (d) ribs.
The axial skeleton constitutes the central framework of the body. It includes the bones of the skull, the ossicles of the middle ear, the hyoid bone of the throat, the vertebral column, and the thoracic cage (ribcage).The bones of the arms and legs, as well as the hip bones, are part of the appendicular skeleton.
The axial skeleton provides support and protection for the brain, spinal cord, and the organs in the thoracic cavity, among other functions. For example, the ribcage protects the heart and lungs, illustrating the axial skeleton's key protective role.