The correct answer here would be the third option.
The order of importance would be the best strategy here in my opinion because you would want to stress the most important notion first, which is the part that would be most discussed. The less important details (they are still important though) you would discuss later as in order not to take the focus of the most important thing.
The best organizational plan if the purpose of your research paper is to defend or oppose an amendment to the Constitution is C.order of importance. This is because you need to arrange the importance of the purpose for your readers to understand your goal.
