A is the most clear and sensible answer
Rude. Doesn’t sound like this person is angry. Saying things like “only have themselves to blame.” Is an example of being rude.
“Tricking” and “misleading” are both synonyms and they both have different connotations... “tricking” has more of a negative tone while “misleading” has more of a neutral tone.
(Hope this helps)
This story is taking place at a school or library due to there being other people around and Alex talking to a librarian after being disruptive.
Diaries and journals can tell the reader about the authors personal life and experience.