Final answer:
Darcy's desire to introduce Elizabeth to his sister indicates he values her and cares about her, demonstrating inclusion, respect, and personal affection.
Step-by-step explanation:
When Darcy desires to introduce Elizabeth to his sister, it suggests that he genuinely values Elizabeth's opinion and cares about her. This action indicates that he sees Elizabeth as someone important enough to meet his own family, which is a gesture of inclusion and respect.
This behavior demonstrates that Darcy is invested in Elizabeth's opinion and is seeking to bring her closer into his personal circle, suggesting personal affection and esteem.