Final answer:
The statement is true, as performing CPR for 2 minutes before activating the emergency system and retrieving an AED is recommended when a rescuer is alone and did not witness the child's collapse.
Step-by-step explanation:
The statement is True. If a rescuer is alone and did not see the child collapse, they should perform 2 minutes of CPR before leaving the child to activate the emergency response system and get the AED (Automated External Defibrillator). This initial period of CPR can be critical for the child’s survival, especially when there is a delay in emergency response or AED usage. Once CPR has been initiated for 2 minutes, the rescuer should then seek to activate the emergency response system and retrieve an AED, which provides verbal instructions and can be a lifesaver by delivering an electrical shock to correct abnormal heart rhythms like ventricular fibrillation.