What is the relationship between drama and plays?

drama is the plot of a play.
drama only occurs in a poem.
drama and plays have no relationship.
drama is the genre of literature to which plays belong.

(D)

A play is a narration expressed as a dialogue, although there may also be a monologue, known as one-man. Just as any other narration has a plot or argument in which it develops in three times or parts: exposure, climax and denouement. A play can have several genres, including drama.

 The drama is relative within the theatrical universe, which can mean both the genre and the conflict of the stage action itself, being used to indicate conflicting actions in a play or literature.

. a function is a relation in which each input has only one output. in the relation , y is a function of x, because for each input x (1, 2, 3, or 0), there is only one output y. x is not a function of y, because the input y = 3 has multiple outputs: x = 1 and x = 2.