Concept:Aristocracy refers to rule by the best-qualified or most noble citizens.
Explanation:The phrase “ruling of the best” directly matches the meaning of aristocracy.
In Greek, “aristos” means “best”, and “kratos” means “rule”.
So aristocracy is literally government by the best people in society.
Democracy is rule by the people.
Timocracy is rule by those who value honour or property.
Plutocracy is rule by the wealthy.
Only aristocracy represents the idea of rule by the best class of persons.
Answer:B. aristocracy