Explain the novel's title as its thematic architecture by tracing Darcy's pride and Elizabeth's prejudice, and analyze the Wickham deception as a test of first impressions.
The novel's title names its structure as much as its theme: pride is principally Darcy's flaw, a coldness bred by rank and family expectation that reads, at the Meryton assembly, as simple contempt; prejudice is principally Elizabeth's, a readiness to judge Darcy once and consider the matter settled, exactly the kind of premature certainty her own intelligence usually protects her from. Austen splits the title's two nouns across her two central characters, but neither owns their flaw exclusively -- Darcy is not without prejudice about rank, and Elizabeth is not without pride in her own judgment, which is precisely what makes her misjudgment of him so convincing to the reader as well.
The Wickham deception is the plot's central engine for testing first impressions against reality. George Wickham arrives charming, wronged, and eager to share a plausible, sympathetic story about Darcy's supposed cruelty toward him -- and Elizabeth, prejudiced against Darcy already, accepts the story with far less scrutiny than her normal sharpness would apply, precisely because it confirms what she has already decided to believe. The novel is quietly arguing something larger here: prejudice is not simply disliking someone unfairly, it is a lens that makes new evidence, even weak evidence, look like confirmation rather than something to be tested.
Mastery looks like: They can explain how the title's two flaws map onto Darcy and Elizabeth respectively, and can analyze the Wickham deception as evidence of how prejudice shapes the reading of new information.
Common stumbles: Treating Darcy as simply a villain and Elizabeth as simply correct, rather than recognizing both characters hold a version of each flaw; missing that Elizabeth's acceptance of Wickham's story is presented as a believable consequence of her prejudice, not a plot contrivance.