Answer:
At first Buck tried not to fight with Spitz because he didn't want to set a bad example. Here, Option D is the right choice.
Step-by-step explanation:
In Jack London’s “The Call of the Wild,” Buck is said to have the Dominant Primordial Beast in him. It means that he had the will to survive as the primary thing in his life. He too was a head of a group of dogs just like Spitz. There was always a sour hatred between the two.
When Spitz attacked any other dogs, Buck would come in between which caused all the animosity. But he always avoided fighting with him as he found it useless and to keep his image among other dofs right.