"introduction to oedipus the king": what is most likely the author's intent in writing about the difference(s) between sophocles's play and the original myth on which it's based?

The author of the introduction is probably trying to show why Oedipus the Kings is a work of literature worth reading, and what is Sophocles’ merit in writing that play.  

There is a gap of almost twenty centuries between us and Sophocles, so the introduction to the book is trying to show you why its themes are still valuable and worth reading today. It also highlights the difference between the fable of Oedipus and the way Sophocles turns it into a work of art.  

answer: b. grete might have remained as shy and immature as she was at the beginning of the story.

one of the most interesting characteristics of gregor's metamorphosis is that, although he is the only character who has physically changed, it is this same change which triggered a transformation in the rest of his family.

by taking care of gregor, grete has become stronger and more confident. she has found a life outside of the house, and has become more independent and self-sufficient. the novel implies that the trigger for the change is gregor's own transformation, and that without it, grete was likely to remain as shy and immature as she was at the beginning of the book.

explanation: