The correct answer is B. The story contains a moral.
Step-by-step explanation:
In literature, parables are usually short didactic stories that include human characters in "real-life" situations that are used to convey a specific moral or lesson about life, behavior, beliefs, etc. This type of literary work is quite similar to fables, but in fables, animals and not humans are the main characters. Additionally, parables are common to depict religious morals or values, although they can be used to convey morals that are not related to religion. Considering this, the sentence that best describes a characteristic of a parable is the story contains a moral, because this is the main purpose of any parable.