Final answer:
The ID of the spinal cord section in the thoracic region is 4) Thoracic.
Step-by-step explanation:
The ID of the spinal cord section in the thoracic region is 4) Thoracic. The thoracic region follows the cervical region and precedes the lumbar and sacral regions. This means that the thoracic section of the spinal cord is located in the upper back, between the cervical and lumbar regions.