You need to answer a given question containing a blank (_). Your answer must be one of the two objects mentioned in the question, for example "trophy" and "suitcase". Your answer must not contain a word that is not present in the question. Please don't use articles (e.g., the, a) before the answer.

The sound of the speaker put a crack on the window close to it because the _ is too strong.
sound

The game was destroyed when a surge voltage was supplied to it. The _ is strong.
voltage

The doctor had to decide put s cast or a wrap on the ankle, if the x-ray showed the ankle was broken he would use the _ .

cast