The correct answer is B) avoiding possible injury to the spinal cord by incorrect handling. The primary concern in aiding a back injury patient is to avoid further damage to the spinal cord. Improper handling or movement of the patient could potentially worsen the injury and lead to permanent paralysis or other neurological complications. The goal is to immobilize the spine and avoid any unnecessary motion until the patient can receive proper medical attention. The other answer choices, while important considerations, are secondary to the critical need to protect the spinal cord from additional trauma.