read the definitions, then choose the word that correctly completes the sentence. in- = not aud = to hear…

read the definitions, then choose the word that correctly completes the sentence. in- = not aud = to hear -ible = can be done -ity = state or condition of my grandfather spoke so quietly that his words were almost audible. audibility. inaudible. inaudable.
Answer
Brief Explanations:
The prefix "in -" means not. "Aud" means to hear and "-ible" means can be done. So "inaudible" means not able to be heard, which fits the context of the grandfather speaking so quietly his words were almost not hearable.
Answer:
inaudible