Which phrase describes a characteristic of an arrhenius base? a. adds hydronium ions to the solution b. accepts hydronium ions c. adds hydroxide ions to the solution d. accepts hydroxide ions

 The phrase  that describes a   characteristic   of an Arrhenius base is  that Arrhenius  base add  hydroxide  ions  to  the solution ( answer C)

      Explanation

Arrhenius base  is a substance that  increases  the concentration  of OH-  in aqueous  solution.

The Common Arrhenius base are  group 1 and  2 hydroxide  such as LiOH, NaOH ,  Ba(OH)2  among others.  

for  example  NaOH  dissociate  as follows , NaOH  →  Na+(aq) + OH- (aq)

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

it is b that is the answer.