The part of the plot where the excerpt was found is it's: rising action.
The rising action is the part of a story where the author builds tension that eventually results in the climax.
In the excerpt, we learn of how the officer entered the room on a search to find things in disarray. He also saw a checkbook that delighted him. All of these build tension in the story.
Learn more about the rising action here:
https://brainly.com/question/1666235
