Final answer:
The victim who requires CPR is a victim who is unresponsive with no normal breathing and no pulse.
Step-by-step explanation:
According to the information provided, the victim who requires CPR is option a: A victim who is unresponsive with no normal breathing and no pulse. This indicates that the victim's heart has stopped, which is considered cardiac arrest. CPR can help maintain the flow of blood until the heart resumes beating. It involves applying pressure to the sternum between the lines at T4 and T9 to squeeze the blood out of the heart and into the circulation.