Answer:
B.Thoracic
Step-by-step explanation:
If you ever feel like you have too much on your back, you might be right. The thoracic region of the spine has 12 vertebrae, which is more than any other region of the spine. That's a lot of bones to carry around! The cervical region has seven vertebrae, the lumbar region has five vertebrae, the sacral region has five fused vertebrae, and the coccygeal region has three to four fused vertebrae. The thoracic vertebrae are in the upper back and are attached to the ribs. So next time you have a backache, just remember: you have a lot of backbone!