Concept:In the question, “vertebrate” refers to a vertebra, one of the small bones forming the vertebral column.
The vertebra that joins with the ribs and helps in breathing is the thoracic vertebra.
Explanation:The vertebral column is divided into regions: cervical, thoracic, lumbar, sacral, and caudal.
The thoracic vertebrae are located in the chest region.
Each thoracic vertebra articulates with a rib, forming the rib cage.
During breathing, the rib cage moves outward and upward to allow air into the lungs.
It moves inward and downward to push air out of the lungs.
This movement is assisted by the thoracic vertebrae because they provide the attachment points for the ribs.
The sacral vertebrae form part of the pelvis.
The caudal vertebrae form the tail.
The lumbar vertebrae are in the lower back and are not directly connected to the ribs.
Therefore, the correct type of vertebra is thoracic.
Answer:C. Thoracic