Final answer:
The final sentence differs from the rest of the passage in its adherence to the editing focus and the writer's intent to challenge expectations.
Step-by-step explanation:
The final sentence (lines 74-80) differs from the rest of the passage in that it generally adheres to the "Editing Focus" of this chapter-mixed sentence constructions, as discussed in Section 9.6-and maintains consistency in constructing the grammatical paths of sentences.
The text also shows limited evidence of the writer's intent to consciously meet or challenge conventional expectations in rhetorically effective ways.
In contrast, the rest of the passage exhibits various levels of adherence to the editing focus and demonstrates emerging or no evidence of the writer's intent to meet or challenge conventional expectations.