Epistolary form is the art of moving the story forward with letters. Novels written in this form usually incorporate "letters" between characters that show what the story is like. It needs not necessarily be letters and can include news paper articles or similar. An example of such a novel would be Bram Stoker's Dracula.
The real answer on Edg. is A) the quality of being unchanged from the original state
Yes that could be a survival reference
