8. It can be inferred from the passage that the author would be most likely to agree with which of the following statements about the usefulness of life stories as a source of ethnographic information?
(A) They can be a source of information about how people in a culture view the world.
(B) They are most useful as a source of linguistic information.
(C) They require editing and interpretation before they can be useful.
(D) They are most useful as a source of information about ancestry.（A）
(E) They provide incidental information rather than significant insights into a way of life.
答案是A怎么理解？？？ | 
