CPR is composed of which of the following skills?

CPR, or cardiopulmonary resuscitation, is a life-saving technique used in emergencies when someone's breathing or heartbeat has stopped. The correct skill sequence for CPR involves administering 30 chest compressions followed by 2 rescue breaths. This approach is based on the guidelines provided by health organizations to help increase the chances of survival in a cardiac arrest situation.

The 30 compressions generate blood flow to vital organs, particularly the brain and heart, which is crucial until professional help arrives or an automated external defibrillator (AED) is available. Following the compressions with 2 breaths helps provide oxygen to the lungs, which is essential for reviving an individual and restoring their normal heart rhythm. Hence, the combination of 30 compressions and 2 breaths is critical for effective CPR and the correct answer.