Yes. Calling out is acceptable only when you are doing it for a good reason. Calling out isn’t acceptable when you’re doing it in a rude/mean way.
Has depression... (?)Tom feels like he needs to hold onto his sorrows, and that it is so sacred he has to move away when Mary comes in and breaks up his bad mood. Thats all i can explain, maybe you can find the answer.
An unreliable reader or narrator (they are the same thing) can have numerous negative impacts on the audience. It can make the audience angry, bored, sleepy, confused, etc.
B I think sorry if it’s wrong
I would say C, yeh that seems the best fit