Concept:Neutral oxides are oxides that show neither acidic nor basic properties.Explanation:SO2 and SO3 are acidic oxides. Na2O is a basic oxide, while ZnO is amphoteric. Neutral oxides include CO, NO, N2O, and H2O. Option A contains only N2O, H2O, and CO, all of which are neutral oxides.Answer:A. N2O, H2O, CO