Final answer:
The passage contains foreshadowing of Buck's future conflict with Spitz.
Step-by-step explanation:
The correct answer is (B) foreshadowing.
In this passage, François is foreshadowing that Buck will eventually become so angry with Spitz that he will attack him and defeat him. Foreshadowing is a literary device where the author hints at events that will happen later in the story.
In this case, François' statement is a hint at the future conflict between Buck and Spitz, suggesting that Buck will overpower and dominate his rival.
Learn more about Foreshadowing in literature