Question

test major bones
the axial skeleton is comprised of ...
○ skull, vertebrae, ribcage, sternum
○ skull, vertebrae, pelvis
○ arm bones, leg bones, pelvis
○ all of above

Explanation:

The axial skeleton consists of the skull, vertebrae, ribcage, and sternum. The pelvis is part of the appendicular skeleton, and arm/leg bones are also appendicular. So the correct option includes skull, vertebrae, ribcage, sternum.

Answer:

A. skull, vertebrae, ribcage, sternum (assuming the first option is labeled A, as per the order: first option is "skull, vertebrae, ribcage, sternum", second "skull, vertebrae, pelvis", third "arm bones, leg bones, pelvis", fourth "all of above")