Final answer:
The statement is true (A); a ground fault interrupter (GFI) or ground fault circuit interrupter (GFCI) must be used if the outlet is not a ground fault outlet, as they protect against electrical shocks by detecting and stopping ground faults.
Step-by-step explanation:
A ground fault interrupter (GFI) or ground fault circuit interrupter (GFCI) is an essential safety device designed to protect against electrical shocks by promptly detecting and interrupting ground faults. This smart device monitors the balance of electrical current moving through a circuit and trips if it detects an imbalance, such as when electricity is flowing along an unintended path, potentially through a person who is in contact with the ground.
The statement that a ground fault or circuit protector must be used if the outlet is not a ground fault outlet is TRUE. GFIs are particularly critical in areas where the risk of electrocution is high, such as bathrooms and kitchens where the presence of water increases the risk.