Second-person point of view
A because your heart doesn’t actually sink, it’s an expression of dread. :)
I believe it is A. It talks about forging a new nation so A seems to be the best answer.
Answer:
It is 3, or C.
Explanation:
I love that book, and I remember how it said that John Thornton was Buck's last tie to civilization, And once he died Buck was free to go primitive without anything holding him back. Loving him caused Buck to be unsure of himself and his primitive identity.