In order for a physical barrier to be effective in preventing infection, the barrier must . A. Prevent the substance from entering the body, trap the substance when it first enters the body, or flush the substance out of the body B. Destroy the substance before it enters the body, prevent the substance from reproducing, or flush the substance out of the body C. Trap the substance in the body, remove the substance from the body, or prevent the substance from reproducing D. Flush the substance from the body, transport the substance in the body, or destroy the substance in the body Please select the best answer from the choices provided. A B C D

At 2: 00 am, a 17-year-old boy, accompanied by his 19-year-old girlfriend, had driven to the bar to give his father (who had been drinking large amounts of alcohol) a ride home. on the way back, they were involved in a motor vehicle collision. the boy has a large laceration with profuse bleeding on his forehead. his girlfriend is unconscious in the front passenger floor. the father is standing outside the vehicle, appearing heavily intoxicated, and is refusing care. what is the best way to gain consent to begin care when his father has an altered mental status or is unconscious? a. phone his mother for consent. b. call his grandparents for consent. c. it is a true emergency, so consent is implied. d. you are covered under the good samaritan laws.