Answer:
D.
Step-by-step explanation:
"The Slump" is written by John Updike. It is a self-narrative story of a professional ballplayer. One day he finds himself unable to hit the ball as good as he used to before.
It is a monologue. A monologue "is a speech given by a single character." And in "The Slump" the narrator gives a monologue about his slump to an unidentified audience.