Answer :
The condition that involves degenerative changes in the lumbar region without affecting the spinal cord (myelopathy) or spinal nerve roots (radiculopathy) is: D) Lumbar spondylosis
Lumbar spondylosis refers to the general wear and tear and degenerative changes in the lumbar spine. It primarily affects the intervertebral discs and facet joints and does not necessarily lead to nerve root compression (radiculopathy) or spinal cord compression (myelopathy).
