Depends on what kind of essay, comment me back and tell what kind.
Answer:
Pavel accidently spills wine onto Kolter's lap.
Explanation:
As Bruno is discovering the dark side of his father's position, he is greatly upset and cries because of Kolter's actions towards Pavel for accidentally spilling wine onto him, even though we the readers do not know what he did to him.
Last one “He often gets sick”