<span>The international prohibition sign (official name), (also known as a no symbol, no sign, circle-backslash symbol, nay, interdictory circle, or universal no)</span>
I think the answer here is c
1) Chapter 22
Lucy reveals that she is secretly engaged to Edward. Only Lucy's sister and Elinor knows about it. Elinor is sad because of this discovery but she keeps the secret.
2) Chapter 24
Elinor says Lucy that her engagement might cause Edward's disinheritance in favor of his brother. Lucy feels frustrated and she considers calling off the engagement.
