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]: Jen preferred treating her cold with medicine over going to the doctor because the _ was more convenient.
[A]: medicine


[Q]: The bike manufacturer switched its fabrication from steel to aluminium frames because the _ was lighter.
[A]: aluminium


[Q]: Billy wore the face mask at the factory but not at the house because the air was better at the _ .
[A]:
house