Answer :
The only spinal column that does not cross over as it enters the spinal cord is the posterior column. Instead, the medulla oblongata is where the posterior column transitions. Therefore, option (B) is correct.
What is Posterior column pathway?
The dorsal column–medial lemniscus pathway (DCML) is a sensory pathway of the central nervous system that conveys sensations of fine touch, vibration, two-point discrimination, and proprioception (position) from the skin and joints. It is also known as the posterior column–medial lemniscus pathway, or PCML.
The only column other than the posterior one to enter the spinal cord without making a crossing is the posterior column. In its place, the posterior column makes a U-turn in the medulla oblongata.
Therefore, option (B) is the correct option.
Learn more about Posterior column pathway, here:
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