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


[Q]: Math was the simple paper in the exam and Chemistry the difficult because the _ had a strict teacher.
[A]: Math


[Q]: The new dishwasher used less power than the new washing machine because the _ was inefficient.
[A]:
washing machine