Answer:
A.interviews
C.news articles
E.textbooks
If an author decides to fictionalize a story, he needs to make sure that the research he conducts is reliable and that he is well-informed about the real events of the story. In order to do so, the author should look for reliable sources of information such as interviews with witnesses or protagonists of the story, news articles relating the events, and textbooks that study the event that will be fictionalized.