The purpose of an outline is to organize your thoughts, guide you through your paper to works cited, make sure that you do not plagiarize and help visualize your information. All the choices above are the purposes of an outline. It organizes your thoughts as it gives you the guide on foreseeing the possible subtopics. It helps you visualize the information while you are brainstorming the possible topics related to your theme. It will help you from plagiarizing because you could cite sources instead.