Which set of actions is described by the ABCs in basic life support?

• A. Airway, Breathing, Circulation
• B. Alignment, Balance, Coordination
• C. Alertness, Breathing, Circulation
• D. Airway, Body temperature, Circulation

Answer: (A)

In basic life support, the ABCs describe the order of steps: Airway, Breathing, Circulation. First make sure the airway is open and clear. If the person isn’t breathing normally, provide rescue breaths. After addressing airway and breathing, assess circulation and begin chest compressions if there is no pulse. The other options don’t fit this established sequence: one uses unrelated terms, another changes the first step to something like alertness, and another inserts an irrelevant factor (body temperature). So the correct set is Airway, Breathing, Circulation.