Concept:Neutral salts are formed by the reaction of a strong acid and a strong base. They produce a neutral solution (pH 7) when dissolved in water.Explanation:Sodium Chloride (NaCl) comes from the strong acid HCl and the strong base NaOH. Their reaction gives a neutral salt and water.Sodium Carbonate comes from weak acid (carbonic acid) and strong base (NaOH). It is a basic salt.Sodium Acetate comes from weak acid (acetic acid) and strong base (NaOH). It is also a basic salt.Ammonium Chloride comes from strong acid (HCl) and weak base (ammonia). It is an acidic salt.Only Sodium Chloride is neutral.Answer:A. Sodium Chloride