1) What is the first step in the BLS sequence? a) Check for danger b) Begin chest compressions c) Open the airway d) Assess breathing 2) How deep should chest compressions be performed on an adult during CPR? a) 1 inch (2.5 cm) b) 2 inches (5 cm) c) 3 inches (7.5 cm) d) 4 inches (10 cm) 3) What is the recommended compression-to-ventilation ratio for one-rescuer adult CPR? a) 15:2 b) 30:2 c) 5:1 d) 10:1 4) Which of the following is a common sign of effective chest compressions? a) Patient regains consciousness b) Audible cracking sound from the chest c) Chest rises with each ventilation d) Increased heart rate 5) When should an automated external defibrillator (AED) be used in the BLS sequence? a) After the initial assessment b) Before starting chest compressions c) Only if a healthcare professional is present d) After 5 minutes of continuous CPR 6) What is the correct hand placement for chest compressions in an infant? a) Lower half of the sternum b) Upper half of the sternum c) Center of the chest just below the nipple line d) Over the mouth and nose 7) What is the primary purpose of rescue breaths in BLS? a) To provide oxygen to the lungs b) To stimulate the respiratory center in the brain c) To clear the airway of obstructions d) To increase blood flow to the heart 8) Which of the following actions should be taken if the victim is responsive but not breathing normally? a) Begin chest compressions b) Give rescue breaths c) Administer an AED shock d) Check for a pulse 9) In BLS, what does "C-A-B" stand for? a) Compression, Airway, Breathing b) Circulation, Airway, Breathing c) Chest, Airways, Breaths d) Check, Assess, Breathe 10) How often should rescue breaths be given during CPR for an adult victim? a) Every 5 compressions b) Every 10 compressions c) Every 15 compressions d) Every 30 compressions

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