The topic states that all punctuation placement in dialogue follows one organizing principle. What is that principle, and how does it explain where to place the question mark in: Did she say, "Leave now"?
Think about your answer, then reveal below.
Model answer: The principle is ownership: punctuation that belongs to the quoted words goes inside the closing quotation mark; punctuation that belongs to the surrounding sentence goes outside. In 'Did she say, "Leave now"?' the question is being asked by the surrounding sentence (the narrator is asking whether she said something), not by the quoted words themselves — 'Leave now' is a command, not a question. So the question mark goes outside the closing quotation mark.
The explainer frames every placement rule as an answer to 'who owns this mark — the quoted words or the surrounding sentence?' For commas and periods, American convention assigns them to the quoted words by default (they always go inside). For question marks, you must determine actual ownership. Here, the question is in the framing sentence, not in the quote, so the mark goes outside. If the quoted words themselves were the question — He asked, 'Did she leave?' — the mark would go inside.