To Introduce the topic with some indication of its inherent interest or importance, and a clear definition of the boundaries of the subject area.
The answer would be D. Jonah was prepared for his summer advent. A Lists more things that he'll do, rather than ending the paragraph. B has nothing to do with the paragraph. C is when is about to end the passage before it even started. D tells the reader that the list is ending, while telling them that he is prepared for summer camp. I hope this helped ^^
Some people might say it is even good to mention incomplete projects, It's even better to have something already done. I would say that it would be fine to mention it, might even help.
