TASK DEFINITION: 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.
PROBLEM: The rabbit was old and we had to decide whether to let it die naturally or put it down.  After getting really sick yesterday we decided to _ .

SOLUTION: put it down

PROBLEM: I selected the hammer instead of the mallet as my tool choice since the _ is heavier and I'm out of shape.

SOLUTION: mallet

PROBLEM: Dave could get his wife jewelry made from diamond or cubic zirconia.  He chose the _ because it was more affordable.

SOLUTION:
cubic zirconia