When should you stop CPR if other trained professionals arrive?

The correct choice is focused on the importance of clear communication in emergency situations. When other trained professionals arrive and instruct you to stop CPR, it indicates that they are prepared to take over the care of the patient. This command is essential as it ensures a smooth transition of responsibilities and allows the professionals to assess the situation and provide the appropriate level of care.

Recognizing and following direct instructions from qualified personnel is vital for the safety and well-being of the patient. It signifies that the rescuers on scene are equipped to handle the situation, whether by performing advanced medical interventions or transferring the patient to a medical facility.

The other options, while they may seem relevant, do not indicate a definitive reason to stop CPR. Simply having identification, being in uniform, or carrying equipment does not automatically convey that the new responders are capable of taking over; it's the directive to stop that indicates readiness and authority.