The correct answer is B. by describing Elizabeth’s thoughts about Mr. Collins.
In this excerpt from Jane Austen's "Pride and Prejudice," the narrative point of view is established through the insights into Elizabeth's perspective, particularly her amusement at Mr. Collins's behavior and feelings. This subjective viewpoint allows the reader to connect with Elizabeth's reactions and interpretations of the situation, emphasizing her character and the social dynamics at play. The other choices focus more on the speech or actions of Mr. Collins rather than Elizabeth's internal response to him.