Read the following excerpt from a literary analysis of a famous novel:
“In Jane Austen's 'Pride and Prejudice,' the author utilizes a range of rhetorical strategies to challenge societal norms and advocate for personal integrity. Through the use of irony, Austen not only critiques the superficiality of social standings but also empowers her characters to seek authentic connections beyond societal expectations.”
Based on this excerpt, which rhetorical strategy does the author most prominently employ to highlight the contrast between societal norms and personal integrity?