Correct Option: A

normalcy (Noun) : a situation where everything is normal; normality
eccentricity (Noun) : behaviour that people think is strange or unusual ; the quality of being unusual and different from other people
similarity (Noun) : the state of being alike but not exactly the same ; resemblance
equality (Noun) : the fact of being equal in rights, status, advantages, etc.
clarity (Noun) : the quality of being expressed clearly