Answer:
The value of love
Step-by-step explanation:
Honestly, if you read the articles it is quite obvious, here is what it says.
Most importantly, he feels genuine love for a man. Feeling this love clearly has a profound impact on Buck. It transforms him. It has saved him. And, as you will see in the next lesson, it provides the greatest counterweight against the call of the wild that Buck feels growing inside of him.
This chapter's focus on Buck's feelings for John Thornton can be summed up by looking exclusively at the word "love."
Consider this: up until this point in the novel, the word "love" is only used five times. And, each of these times, the word is either used in an abstract manner, or it is used to describe the love of some object.
Hope this helps!!!