Final answer:
The correct statement is d. All of the above are correct because there are eight cervical, twelve thoracic, and five lumbar nerve pairs.
Step-by-step explanation:
The question is asking which of the following statements about the number of spinal nerve pairs at different levels of the spinal column is correct. There are 31 pairs of spinal nerves, each emerging from a specific level of the vertebral column. The correct statements about the number of nerve pairs are:
- There are eight pairs of cervical nerves (C1 to C8).
- There are twelve pairs of thoracic nerves (T1 to T12).
- There are five pairs of lumbar nerves (L1 to L5).
Therefore, the correct statement is d. All of the above are correct statements, as they accurately represent the distribution of nerve pairs at the cervical, thoracic, and lumbar levels.