🔍 Key Concepts

• Effects of gas poisoning on vital body functions • The ABCs of first aid (Airway, Breathing, Circulation) and which comes first • Which symptom, if present, is immediately life-threatening and must be addressed before all others

💭 Think About

• Among the choices, which sign—if not corrected within seconds—will most quickly lead to death? • In standard first aid priorities, do you check skin condition, pulse, level of consciousness, or breathing first? • Which option represents a complete failure of a vital function, rather than just a change (slow/weak, cold/moist, etc.)?

✅ Before You Answer

• Identify which option is directly related to breathing/oxygen intake • Decide which symptom requires instant intervention before you can even move on to other checks • Confirm which sign fits with the ‘A’ or ‘B’ in Airway–Breathing–Circulation (ABC) as the top priority