An acid's hydronium ion will donate its proton to a base's hydroxide ion, _________ both.

A. acidifying
B. alkalizing
C. neutralizing


C, Once an acid's H+ combines with a bases' OH-, the two ions form water (H2O) with a pH of neutral 7. Thus, this process is neutralization as both the acid and basic properties are now canceling each other out. Keep in mind though that this question is talking specifically about Arrenhius acid and bases so neutralization reactions can also occur with acids and bases other than H+ and OH-.