Your answer is option D). This is because it is about the importance of something. Remember, what is important to you, may not be important to everyone so this will be arugmentative because it is something that people can either agree or disagree with. It wouldn't be option A, because it is how you are doing something, it wouldn't be B because it is the parts of the space shuttle, and it wouldn't be C because they are just facts about the past.
