To stabilize the other elements
Answer: A, Movement in his lower extremities
Explanation: The right ventral root is responsible for sending information regarding motor functions (movement) of the lower extremities. Any injury to the right ventral root will affect transfer of information and thus movement in the Lower extremities.
When you touch something that is cold the sensory neurons in your hand send a signal to you spinal cord which sends the message to the sensory cortex which is in the parietal lobe.