<span>MYSTERY PLAY 1. a medieval play dramatizing biblical events
DRAMATIC IRONY 2. words or actions whose meanings are recognized by the audience but unrecognized by the characters
ALLEGORY 3. a story in which characters represent parts of a teaching, having both a literal and a figurative meaning
MIRACLE PLAY 4. a medieval play dramatizing incidents in the lives of saints
MORALITY PLAY 5. a medieval dramatized allegory in which virtues and vices appear to struggle for man's soul
CHORUS 6. group commenting on the action in ancient Greek drama dramatic irony</span>
An allusion is a reference to a literary character from a well-known work (for example, Frankenstein, Sherlock Holmes, Biblical characters, etc.). This allows a writer to avoid having to explain all the finer points of his character, by simply pointing the reader to another well-known character. The answer is D.
