Once you have chosen a topic, you must conduct research in order to write your paper accurately. However, if your paper is a personal narrative, for example, you do not need to conduct research. In this case, your next step is to create an outline so that you can organize your paper. If it is a paper that needs research, you cannot develop an outline until you have researched, learned and understood your topic.
Would you take a picture of the passage and show it? I might be able to help.
The answer is D. Supporting sentences should "prop up" a topic sentence, while topic sentences should relate to the thesis statement.
A is false because the "base" is the fundamental facts, not the topic sentences.
B is incorrect because a topic sentence is usually at the beginning of the three middle paragraphs.
C is false because a topic sentence should be about one particular aspect of an overall topic, not a large, branching statement.
Hope this helps!
Depending on the audience, the formality, ideas presented, and vocabulary can change. For example, if you were presenting to children, you wouldn't use complex words.