Final answer:
The lateral spinothalamic tract carries the most nociceptive information in the spinal cord, responsible for transmitting pain and temperature sensations.
Step-by-step explanation:
The spinal tract that carries the most nociceptive information is the lateral spinothalamic tract. This tract is one of the major sensory pathways in the spinal cord.
It is primarily responsible for transmitting pain and temperature sensations to the brain. Unlike the dorsal column system, which carries information such as touch and proprioception, the spinothalamic tract crosses the midline in the spinal cord at the level at which it enters, allowing it to ascend contralaterally to reach the brain.