"his heart beat faster. it was an enemy car. he wanted to fire, but he knew it was useless" how does this passage affect the movement of the story

Imagine you are reading a story about a character named dray. dray is captain of the basketball team and practices for hours after school in order to achieve his goals of playing in the nba. one day, dray decides that he hates basketball. he quits the team and takes up knitting instead. what is the introduction of this new plot point is an example of a. an anticlimaxb. a conclusionc. a contrivanced. a climax