The author's choice to explain the "truth universally acknowledged" in paragraphs 1-2 affects the development of the plot by introducing Mrs. Bennet's particular interest in the arrival of Mr. Bingley. The correct answer is option B.
In these paragraphs, the author establishes that a single man in possession of a good fortune must be in want of a wife. This statement captures Mrs. Bennet's attention as she sees an opportunity to secure a wealthy husband for one of her five daughters. Her interest in Mr. Bingley's arrival becomes a driving force in the plot, as she constantly tries to ensure that one of her daughters catches his attention.
To support this, we can look at later events in the story. Mrs. Bennet becomes determined to have one of her daughters marry Mr. Bingley, leading her to frequently push them into his path and encourage their interactions. This obsession with securing a match for her daughters drives much of the plot, causing conflict, misunderstandings, and even comedic moments.
Overall, the author's choice to introduce the "truth universally acknowledged" in paragraphs 1-2 affects the development of the plot by setting up Mrs. Bennet's particular interest in the arrival of Mr. Bingley and her relentless pursuit of a favorable marriage for her daughters.
Therefore the correct answer is option B.