Question

which dorsal cavity subdivision has bony projectionsie bones that stick out?
a cranial
b thoracic
c pelvic
d spinal
e abdominal

Explanation:

The spinal cavity has spinous processes (bony projections). Thoracic and abdominal are ventral cavities. Cranial cavity has smooth - walled skull. Pelvic is also ventral - related. Spinal is correct for dorsal cavity with bony projections.

Answer:

D. spinal