Final answer:
Elizabeth confides in her aunt and uncle about Wickham and Darcy because she values honesty and feels that they deserve to know the truth.
Step-by-step explanation:
Considering the context and the themes present in Jane Austen's works, I think Elizabeth decides to confide some of the details about Wickham's connection with Darcy to her aunt and uncle because B) She believes they have a right to know the truth. Elizabeth values honesty and feels a responsibility to her family. Her action reflects the themes of integrity and family bonds that Austen often explores in her novels. Moreover, she trusts her aunt and uncle's judgment and wants them to be aware of the full picture, particularly since they have been involved in her social circle and have taken an interest in her wellbeing.