How many cervical, thoracic, and lumbar vertebrae are there? a. 12 cervical vertebrae, 7 thoracic vertebrae, and 5 lumbar vertebrae b. 7 cervical vertebrae, 12 thoracic vertebrae, and 5 lumbar vertebrae c. 5 cervical vertebrae, 12 thoracic vertebrae, and 7 lumbar vertebrae d. 7 cervical vertebrae, 5 thoracic vertebrae, and 12 lumbar vertebrae