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.

Q: The weightlifter felt a lot more tough when working with barbells than with kettlebells, because the _ worked more complex muscle groups.

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

A: sound
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Q: The cake can hardly be cut into such amount of slices because the _ is small.

A:
cake
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