Concept:Sifted wood ash acts as a mild abrasive for cleaning hard household surfaces.Explanation:Wood ash is gritty and can remove stains without scratching very hard surfaces.Glass and ceramic ware have hard, smooth surfaces that can safely withstand mild abrasives like sifted wood ash.Softer materials such as aluminium and wood may be scratched or damaged by abrasive cleaning.Therefore, sifted wood ash is suitable for cleaning glass and ceramic ware.Answer:C. glass and ceramic ware.