The Best answer for a well-known type of allegory is
The answer is B. Aesop's fables.
An allegory is the representation of morals and ideas that are conveyed through characters and situations presented in the story. An example would be a little boy taking advantage of his mother by making her do all of his chores, making her buy him everything he wanted, ect but then realizes that he took his mother's love for granted when she passed away. The moral of the story is that you shouldn't take advantage of somebody because you don't know when you'll lose them.