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]: James found inspiration from the forest and books at the library because he liked to be in a _ while it was sunny.
[A]: forest

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

[Q]: I need to teach my cat how to do a handshake. I could use either classical conditioning or operant conditioning. The _ approach is foolproof.
[A]:
classical