Correct Option: C

generality (Noun) : a statement that discusses general principles
idiosyncrasy (Noun) : an unusual feature ; a person’s way of behaving, thinking, etc., especially when it is unusual ; eccentricity insanity (Noun) : the state of being insane ; madness ; lunacy
sanity (Noun) : the state of having a normal healthy mind
singularity (Noun) : the quality of something that makes it unusual or strange