Answer:
D. Satisfaction.
Explanation:
"The Call of the Wild" by Jack London is an adventure novel that tells the story of a dog named Buck and his various encounters with the many people he will encounter on the way. Set in the Yukan region of Canada, it shows Buck's transformation from a domestic dog to a leader of a pack of wolves.
In Chapter VII: The Sounding of the Call, Buck and his current master John Thornton and the other dogs were trekking and travelling in search of food and a mythical mine that was supposed to contain lots of gold. They had been travelling without anything to eat, fishing and hunting unsuccessfully. On their second year, they chance upon a "shallow placer in a broad valley where the gold showed like yellow butter across the bottom of the washing pan". This gave them the satisfaction of at least succeeding in getting something.
