Final answer:
The word 'mad' highlights Ned Land's sense of desperation in the given literary context.
Step-by-step explanation:
The use of the word mad in the sentence from paragraph 10 contributes to the sense of desperation Ned Land feels in this situation. The connotations of madness imply a loss of rational thought due to extreme stress or fear, painting a vivid picture of Ned Land's frenzied state. This choice of diction adds depth to the narrative, heightening the intensity and stakes, and helping the reader to feel the urgency and the chaotic emotions of the characters in this critical moment.