what ion is most closely associated with bases?\no ammonium\no hydroxide\no carbonate\no hydrogen

what ion is most closely associated with bases?\no ammonium\no hydroxide\no carbonate\no hydrogen
Answer
Brief Explanations:
Bases are substances that produce hydroxide ions ($OH^-$) in aqueous solutions according to the Arrhenius theory. Ammonium is associated with ammonium - containing salts, carbonate with carbonates, and hydrogen ions are associated with acids.
Answer:
hydroxide