Answer:
B. The essay would have a more informal tone and use personal examples to make its points.
Answer:
Robert likes to guess, but the number devil does not.
Explanation:
He says that guessing is not allowed so he never does it but robert thinks its ok to geuss when you know the answer.
Answer:
Mrs. van daan thinks she should not be reading those things
Answer: B
Explanation:
A second person narrator is very uncommon, and will use the words "you" and "your" as subjects. (Some self-insert fanfictions do this, but that's about it.)
A first person narrator is much more common, and it would mean the story is told by a character in the book and use "I, I'm, I've," etc. in places other than dialogue.
Looking up the story, I can see neither of these are the case, so it's probably B.