Final answer:
The correct sequence for how information travels to and from the spinal cord is: dorsal root, dorsal horn, ventral horn, ventral root. Sensory information enters via the dorsal root, processes in the dorsal horn, eventually affects motor neurons in the ventral horn, and exits through the ventral root.
Step-by-step explanation:
The correct order in which information approaches and leaves the spinal cord is: B. Dorsal root, dorsal horn, ventral horn, ventral root.
Explanation: Sensory information enters the spinal cord through the dorsal root, carrying sensory information from the body's sensory receptors. This sensory information then proceeds to the dorsal horn of the spinal cord's gray matter, where it may be processed or relayed to other neurons. After potentially being transmitted up or down the spinal cord via white matter tracts, it may reach the ventral horn, where it can influence motor neurons. These motor neurons send their axons out of the spinal cord via the ventral root to reach skeletal muscles and instigate movement. Therefore, sensory information follows a pathway from the dorsal root to the dorsal horn, and motor commands leave the spinal cord through the ventral horn to the ventral root.