Question

these structures support the spinal cord by preventing lateral movement.
denticulate ligaments
spinal ligaments
coccygeal ligament
cauda equina
rami communicantes

Explanation:

The denticulate ligaments are bilateral triangular ligaments that anchor the spinal cord to the dura mater. They prevent lateral movement of the spinal cord. The spinal ligaments are a general term for ligaments related to the spine but not specifically for preventing lateral movement of the spinal cord. The coccygeal ligament is related to the coccyx. The cauda equina is a bundle of nerve roots. The rami communicantes are related to the autonomic nervous system connections with spinal nerves.

Answer:

denticulate ligaments