Question

Which is an abnormal behavior related to mental illness?

Answer 1

Paranoia, hallucinations, talking nonsense words, delusions.

This questions is quite open, so options are endless. 

Answer 2

I put starving yourself to stay skinny and being constantly suspicious although idk if it COULD be the dressing up in costumes and asking for food one too. I KNOW for a fact it's not wearing all balk and dyeing your hair extreme colors because that could just be an act or statement