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]: Wanting to be comfortable, the woman placed a pillow on the sofa because the _ was stiff.
[A]: sofa


[Q]: She wondered if the schedules or the classes would lead to the most discipline, but the _ had the most effect.
[A]: classes


[Q]: The virus that he contacted was more severe than the flu that his sister had because the _ was common.
[A]:
flu