Hello. You have not shown the text to which this question refers, which makes it impossible for it to be answered. However, I will try to help you as best I can.
An exposition is an element of a plot. It represents the moment when the story is being presented in a text, that is, it is in the exposition, that the text presents the characters, the setting and the main points of the story that will be worked on during the plot. A point plot, on the other hand, is also known as a turning point and is the moment, in a text, that an event occurs and modifies the entire narrative, presenting unexpected situations that take the story in another direction.
When evaluating the answer options you presented, the first one is the one that most resembles a point plot that can be used as an exposition, but you can only know this with a thorough reading of the text and this reading is you who must do. In short, a point plot that is presented as an exposition is the moment in the text, when a situation that modifies the story happens and that same situation is presenting something important in the plot.
