Studies show that when someone receives cpr before emergency personnel arrive: they do not survive. they have a greater chance of survival. usually the person doing the cpr does it wrong. the heart begins to beat.

Cardiopulmonary resuscitation or most commonly referred to as CPR is administered as an emergency procedure and combines chest compression for artificial ventilation. Those who received this before the arrival of the emergency personnel are more likely to survive. Thus, the answer is the second choice.