Final answer:
Moving the client quickly as one unit would be least helpful in minimizing the effects of vasodilation below the level of the injury in spinal shock.
Step-by-step explanation:
The nurse should not move the client quickly as one unit in order to minimize the effects of vasodilation below the level of the injury in spinal shock. This is because moving the client quickly can exacerbate the vasodilation and further decrease blood flow. Instead, slow and gentle movements should be performed to prevent sudden changes in blood pressure.