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


[Q]: We used a marble finish in place of the old granite for greater appeal, so the _ was cheap.
[A]: granite


[Q]: She left the library to go study at home, since the _ was insufficiently quiet for concentrating.
[A]:
library