The resolution of the story is the culmination of its plot, following the climax. It might be the hero returning home after killing the dragon, or the lovers starting a life together after a proposal. It must remain consistent with the plot as a whole; a resolution involving aliens would make no sense in a serious drama with no extraterrestrials.
Doll collection can be a very expensive hobby in my opinion would make the best topic statement, it leaves the mind wondering and is intriguing and doesn't state facts right off the bat.