Sentence:  The simplest <WSD>rejoinder</WSD> to all of Daenerys' justifications is that this bloodshed could have been avoided. She was given a moment to choose, and she chose blind vengeance, the kind that eliminates any benevolence she hoped to bring to the seven kingdoms by burning it right out of the minds of anyone who saw her astride Drogon, mowing down men, women, and children with abandon. 
Meaning of the word marked with <WSD> tags:  A quick response that involves disagreement or is witty, especially an answer to a question.