The excerpt reveals that Kenneth wants to control the situation.
Explanation:
Based on the excerpt above, we can see that Kenneth's tone was composed compared to the emotional tone of Xavier. The passage also tells us how Xavier was alarmed but he only talks for a short period. Xavier becomes furious because of the incident that happened (XAVIER (Alarmed): You told? You promised me you wouldn’t. Oh, man, this could be disastrous) but Kenneth had to calm him down by saying (I waited until Ms. Wilmore went to help somebody, then I sneaked the book off the shelf and copied the thing). Kenneth wants to control the situation because he is the one that sneaked the book off the shelf and copied the thing.
I put on my winter coat and grab my keys. I get into the car and the engine rumbles on. The frost on my windsheald makes the road a bit blurry, but it will have to do. I park downtown, and walk into the restaurant. The floor rumbles from the music.