Based on the excerpt given above, it can be inferred that:
She cares deeply for Jim, she is used to feeling short on money and she is happy in her relationship with Jim. That she care for Jim is made obvious by the way she save toward buying a gift for him and the way she talks about him. The part of the passage which reads, 'expenses has been greater than..........., shows that she is used to feeling short on money.
The answer is D.Love
Buck resisted the "call of the wild" for a long time because he loved John. When John is killed by Indians, Buck goes and kills the Indians.