What sentence in this excerpt from Herman Melville's Bartleby the Scrivener best exhibits the use of verbal irony?

Dramatic irony is when the audience knows something that the characters do not. If someone does not hear an intruder in the house, but the audience sees them hiding behind the door, it is dramatic irony.

An example:

Romeo entered the room and assumed Juliet was dead, and he commits suicide. The audience knew that she was only sleeping in a drugged state.