Owl-eyes refer to the old man wearing eyeglasses. He was the only one keen enough to investigate so he was the only one who knew who Gatsby really is. What surprised Owl-eyes are the books displayed in his library were real. They may be actual book but not a single page was read. This made him impressed since Gatsby was really good when it comes to deceiving people.
The correct answer (since there are not any choices listed) should be something about dealing with nature. The churches did not agree with the thought of nature being what was important biblicaly or religiously. Nature would symbolize science rather than religion. Many placed mosaics in churches by the means of windows. This helped give the mosaics a radiance, such as that of God and his angels would display.
