GARRULITY

Answer: Option C

Credulity : a tendency to be too ready to believe that something is real or true.
Senility : old age.
Loquaciousness : tending to talk a great deal; talkative.
Speciousness : apparently good or right though lacking real merit.
Garrulity : excessive talkativeness, especially on trivial matters.


Synonym of Garrulity is Loquaciousness