I believe that the answer is “ they aren’t sufficiently brief” because the irony is that he’s expected to make brief summaries so since they aren’t brief then that’s irony.
The answer would be C. In medias re literally means "in the middle of things" in Latin :-)
funny about sunsets to Ponyboy? What does this say about Socs and greasers? He thought that it was funny that she would to the same sunset from her patio and that he would see the same one from his back steps. It says that greasers and Socs are alike.