Based on the contextual information provided about the Regency Era and the excerpt from Jane Austen's Pride and Prejudice, why is Mrs. Bennet eager for one of her daughters to marry the new neighbor?

She wants to ensure that her daughters have loving families of their own.
She wants to ensure that her daughters have financial security.
She wants to ensure that her daughters get high-paying positions.
She wants to ensure that her daughters attend the royal court.