Final answer:
The tone towards Dr. Dussel is sarcastic, as demonstrated by mocking the 'good fortune' of sharing a room with Dr. Dussel and the need to 'pretend to be deaf' to escape criticism.
Step-by-step explanation:
The tone towards Dr. Dussel in the excerpt suggests annoyance or sarcasm. The phrase 'I have the unusual good fortune' is likely sarcastic, given that it is followed by a description of sharing a 'small' bedroom with someone dubbed 'His Lordship', which seems to mock the other individual's self-importance. Additionally, the mention of being considered the 'most badly behaved' and having to 'pretend to be deaf' to avoid criticism shows a tone of exasperation. Overall, the tone leans towards sarcasm (B), as it hints at a mocking sentiment toward Dr. Dussel by pairing supposed 'good fortune' with clear negative experiences.