Concept:Computer hardware cleaning must avoid materials that cause static electricity or moisture damage.Explanation:Antistatic wipes are designed to remove dust safely without generating static charge.Static electricity can harm sensitive internal components near the casing.Cotton wool is not ideal because it may leave lint fibres on the surface.A wet cloth is dangerous because moisture can seep into the system unit and cause short circuits.Static wipes are not the recommended tool for this purpose.Therefore, antistatic wipes are the safest and most suitable option.Answer:A. antistatic wipes