A noun is a person, place or thing if that helps.
We ride both of them.. cars are rideables so as cycles.
From the choices D would appear to be the best.
A. Dark Romanticism because its the awnswer
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 ^^