Implicit means something not clearly stated, so implicit details are details that are not clearly stated. Or rather, they are details that are more implied, rather than given. And how they contribute to the story is that they make the reader figure things out, so it isn't just another easy story to read, but it is a little more difficult to read, because you have to figure things out. hope this answer helps :)
Answer:
c
Explanation:
TONY: Tôi thích anh ấy. Anh ấy sẽ thích tôi.
You are changing singular to plural. All you're doing is adding an S to the end of each underlined word.
I'm pretty sure the answer is A. It makes sense if you think about, to be fair I have never read it after hear so many summaries on it I am confident in the answer.