Question

identify the vertebral curvature at the x
thoracic
costal
lumbar
cervical

Explanation:

The 'X' marks the uppermost, forward-curving (lordotic) section of the spine, which is the cervical curvature. This is the neck region of the vertebral column, distinct from the lower thoracic, lumbar, and non-curvature "costal" (rib-related) option.

Answer:

D. Cervical