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: It was easier to pedal the bike than the tricycle because the _ was better oiled.

Answer: bike


Question: The window got broken when james hit his head on it while sleeping. The _  is hard.

Answer: head


Question: He wanted to visit his parents, but they were exclusive and inaccessible. The _ problem made him worry.

Answer:
exclusive