The correct option is D sodium acetate
In ammonium acetate, both ammonium and acetate ions hydrolyse to form ammonium hydroxide and acetic acid such that the solution is neutral in nature.
Ammonium chloride and ammonium sulphate are salts of weak base and strong acid. Ammonium ion hydrolyse to release hydrogen ions making the solution acidic.
Sodium acetate is a salt of weak acid and strong base. Acetate ion on hydrolysis releases hydroxyl ions to form a basic solution.