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I had the "You cool a room with an air _ _ _ _ _ _ _ " verification question. A previous question had had an answer that matched the number of underscores, so I thought that this would be a seven-letter word. Anyway, these were the responses I tried, none of which appeared to be the correct response: coolant, cooler, conditioner.

So I still don't know what the answer is and I'm a native English speaker.