A short, usually amusing, story about some real person or event

The correct answer is: A. Anecdote.

An anecdote is a short, usually amusing, story about some real person or event. It is often used to illustrate a point or to make a point more interesting.

A antidote is a substance that counteracts the effects of a poison.

A tale is a fictional story, often one that

An allegory is a story that uses characters and events to represent abstract ideas.