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.
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Question: The mother attended the baby's baptism while the father stayed home, since _ 's presence was optional for the ritual.

Answer: father


Question: Inkjet printers are preferred as home printer compared to laser printers since the _ printers take more space.

Answer: laser


Question: We couldn't trust the polygraph test because people just can't play by the rules and negate the _ unfairly.

Answer:
rules