B) The text will explain or inform. This answers makes the most sense. Autobiography's tend to be written in first-person point of view, not third-person. The information is proven true because the author is writing, first hand, about themselves. And C is extremely random, because you could write an autobiography with bullet points and lists to break down information, but B makes the most sense.
Teachers should be given similar starting resources throughout America to ensure quality instruction throughout the country, so we know we're learning similar things to other states and cities.