Concept:Vertebrae are grouped by location and structure; the thoracic vertebra is identified by features that allow rib attachment.
Explanation:The vertebra illustrated is found in the chest region.
Thoracic vertebrae have a long, downward-sloping neural spine.
They also possess facets on the body and transverse processes.
These facets articulate with the ribs, forming the rib cage.
This feature is absent in lumbar, cervical, and caudal vertebrae, making the thoracic type unique.
Answer:B. Thoracic
