Read the excerpt below and answer the question.
The young ladies arrived: their appearance was by no means ungenteel or unfashionable. Their dress was very smart, their manners very civil, they were delighted with the house, and in raptures with the furniture, and they happened to be so doatingly fond of children that Lady Middleton’s good opinion was engaged in their favour before they had been an hour at the Park. She declared them to be very agreeable girls indeed, which for her ladyship was enthusiastic admiration. (Sense and Sensibility, chapter 21, p. 1)
Which social norm is most exemplified in this excerpt?
(A)-primogeniture
(B)-propriety
(C)-courtship
(D)-class consciousness