Final answer:
Option C, the steps leading up to a space shuttle launch, fits best with a natural organization due to its chronological progression from one step to the next.
Step-by-step explanation:
The topic that would work best with a natural organization is C. The steps leading up to a space shuttle launch. This topic inherently follows a chronological sequence, which allows for an organization that progresses naturally in time from one step to the next. An analysis of a novel, an argument about media services, and discussing pros and cons don't have an intrinsic natural order but could be presented in various organizational methods based on the writer's preference or argumentative strategy.