Answer:
It explains that, despite his sickness and overall confusion, the narrator understands that he's been sentenced to death.
Step-by-step explanation:
The text does show that the Narrator doesn't really understand or care about anything going on around him. He is sick and anxious and his agony is the main thing that we feel when we read the text. And still, besides all that, the death sentence pierces through everything that is causing him agony. He cannot avoid feeling even worse when he becomes aware of "The sentence—the dread sentence of death"