The correct option is C HIstorians should conduct research in the areas in which they have expertise
In the given lines, the author explains that she had no knowledge of the history of Black women in America neither had she read any manuscript regarding the lives of Black women and in spite of her sharing all this with Shirley Herd, Herd still persisted in her endeavor to get the writer to write a book on the history of Black women in Indiana. The first half of these lines seem to imply that historians must write on topics in which they have a certain amount of knowledge and expertise. In the given context C is the best answer.