<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 45-year-old man was a driver in a motor vehicle collsion. The patient is not able to offer a medical history during initial presentation. His temperature is 97.6F 36.4C, blood pressure is 10474 mmHg, pulse is 150min, respirations are 12min, and oxygen saturation is 98 on room air. On exam, he does not open his eyes, he withdraws to pain, and he makes incomprehensible sounds. He has obvious signs of trauma to the chest and abdomen. His abdomen is distended and markedly tender to palpation. He also has an obvious open deformity of the left femur. What is the best initial step in management?? A: 100 oxygen, B: Emergency open fracture repair, C: Exploratory laparoscopy, D: Intubation, E: Packed red blood cells,  <response>: This is a trauma patient with decreased level of consciousness, tachycardia, abdominal distension and tenderness suggesting intra-abdominal injury, and an open femur fracture. The first priority is stabilizing the airway in an unconscious trauma patient, before addressing other injuries. D: Intubation 