Cool? Not really sure what the question here is.
I believe it would be to inform, the particular excerpt isn't really informing about anything, and its not persuading the reader to do anything, simply attempting to entertain the reader with a story.
<span>The moment in Oedipus the King where Oedipus realizes he killed his father and married his mother is called anagnorisis, which is a moment in a play when a character makes a critical discovery.</span>
Pretty sure you have to pick the allusion that best describes the sentence.
Answer: B. Salt and rust are corrosives that have damaging effects on a city’s infrastructure.
Explanation: in a text, a main idea is important information that tells more about the overall idea of a paragraph or section of a text. In the given excerpt from "The City Without Us” by Alan Weisman we can see the description of how the salt used on the roadways on winter, is very corrosive because it eats steel, and it also says that with no people, there won't be salt, but there will be rust which is also corrosive. According to this information, the main idea of the paragraph is best represented by option B: Salt and rust are corrosives that have damaging effects on a city’s infrastructure.
