Final answer:
Chest compressors should switch every 2 minutes during CPR to maintain the quality of chest compressions and align with recommended guidelines.
Step-by-step explanation:
The correct answer to the question of when team leaders should tell the chest compressors to switch during CPR is a) Every 2 minutes. High-quality cardiopulmonary resuscitation (CPR) is essential for maintaining blood flow during a cardiac arrest. Compressors can tire easily, which may decrease the quality of chest compressions, and therefore, it is recommended to switch compressors without pausing chest compressions to maintain efficacy. The 2-minute interval is also in line with the American Heart Association's guidelines for CPR, which suggest assessing the victim's rhythm every two minutes, making it a convenient time to switch compressors.