Concept:Earthing connects the metal body of an appliance to the earth for safety.
Explanation:Metal-cased appliances can become live if the insulation fails.
Earthing provides a direct, low-resistance path for leakage current to flow into the ground.
This stops the appliance casing from staying at a dangerously high potential.
Therefore, a person touching the appliance is protected from a severe electric shock.
Earthing also helps fuses or circuit breakers trip quickly during a fault.
Answer:A. person touching the appliance is safe from electric shock.