Which action is NOT appropriate when performing CPR?

The appropriate method for performing CPR on an adult involves a specific rhythm and rate for chest compressions, as well as the proper sequence and timing for breaths. The action mentioned in the selected answer—breathing for the patient every 30 compressions—is inconsistent with current CPR guidelines.

According to the guidelines provided by organizations such as the American Heart Association, for adults, CPR should consist of 30 chest compressions followed by 2 rescue breaths. However, when performing "hands-only" CPR, which is recommended for untrained bystanders or in situations where rescue breaths are not possible, the focus remains solely on high-quality chest compressions at a rate of 100 to 120 compressions per minute without any rescue breaths.

Thus, while the action of providing breaths is important in some CPR scenarios, the timing indicated in this choice does not align with the most effective and recommended approach, where breaths are only given after compressions and not continuously every 30 compressions. This is why the third action is not appropriate in this context. The other actions effectively contribute to successful CPR by adhering to the established protocols.