True, the correct answer is A. Thanks!
From these bullet points we see that Buck is content with his life and he has a great love for his master Thornton, which is evident by the fact that he was able to pull the sled and the he enjoys time they spend together. But there is also that call of the wild with calls to Buck, his instincts always there that pull him to the wilderness.
I believe the answer would be C. What makes things happen.
It helped him to push through conquer and strive to be the greatest
