Which version of the sentence is most concise?

The reason the trip is delayed is because we have not collected all the fees.
The reason for the delay is the fees for the trip have not yet been completely collected.
The trip is delayed because all the fees have not yet been collected.
The trip's delay is because of all the fees not yet being collected.

Me further explain how does social media influence teenagers behavior? in a couple of

Read the excerpt from "the love song of j. alfred prufrock." and indeed there will be time to wonder, “do i dare? ” and, “do i dare? ” time to turn back and descend the stair, with a bald spot in the middle of my hair— [they will say: “how his hair is growing thin! ”] my morning coat, my collar mounting firmly to the chin, my necktie rich and modest, but asserted by a simple pin— [they will say: “but how his arms and legs are thin! ”] do i dare disturb the universe? in a minute there is time for decisions and revisions which a minute will reverse. which lines indicate that the speaker is concerned about what others think of him?

Besides the revisions listed in the paragraph, what else can deepak do to strengthen his paper?