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Final answer:The triage categories for the patients are as follows: Patient 1 - immediate (red), Patient 2 - immediate (red), Patient 3 - delayed (yellow), Patient 4 - expectant (black).Explanation:The triage categories that should be assigned to these patients are as follows:Patient 1: immediate (red) - This patient is experiencing respiratory distress and chest pain, indicating a potentially life-threatening condition that requires immediate medical attention.Patient 2: immediate (red) - This patient has bilateral femur fractures, which can cause significant pain and impairment. Additionally, the numerous abrasions suggest the need for urgent medical care.Patient 3: delayed (yellow) - Although this patient complains of abdominal pain and has a history of cardiovascular disease, these symptoms are not immediately life-threatening. However, they still require medical attention, albeit at a lower urgency level.Patient 4: expectant (black) - This patient is unresponsive, not breathing, and has a grossly deformed skull. These signs indicate a grave prognosis, and without immediate medical intervention, the patient is not expected to survive....