The last one, because it gives another part of Melinda which is irrelevant and does not need to be included in the sentence
To write poetry and spread a message around the world that they think is valuable.
So I'm guessing your teacher wants you to put main situations of The Catcher in the Rye in text message form? Basically I'd just take Holden's thoughts and use them to write modern texts, and then use that chart to explain it