The skull, vertebral column, and thoracic cage form the skeleton.

The skull, vertebral column, and thoracic cage are the main part of the axial skeleton.

So, the answer is that the skull, vertebral column, and thoraic cage form the axial skeleton.

If you look at a diagram of the axial skeleton you will see the bones of the head (skull) , the spine (vertebral column), and the rib cage (toracic cage)

The correct answer is b) false