Hi. You have not shown the text to which this question refers, which makes it impossible for it to be answered. However, I will try to help you as best I can.
To answer this question, you will need to read the entire text, understand the theme and the central topic of the text, and then reread paragraph 16. The text theme is the message it wants to promote and the topic is the subject being presented in the text. For this to be developed in paragraph 16, this paragraph will need to show how this theme and topic actually apply, or the paragraph must present evidence to show that the topic and topic are real and true. In other words, we can state that this paragraph should show that it should stimulate the understanding of the topic and theme of the text, making them more palpable and identifiable for the reader.
Magazines are not always truthful and a college student might have not put some important details. So I say D but if that is wrong I would say C, a text book on U.S. History.
