I need help so somebody help me. Furthermore, it was remarkably easy to overthrow a dog taken by surprise; while a dog, thus overthrown, invariably exposed for a moment the soft underside of its neck—the vulnerable point at which to strike for its life. White Fang knew this point. It was a knowledge bequeathed to him directly from the hunting generation of wolves. So it was that White Fang's method, when he took the offensive, was: first, to find a young dog alone; second, to surprise it and knock it off its feet; and third, to drive in with his teeth at the soft throat. What motivating force causes White Fang to aim for another dog’s neck during an attack?

his feelings of vulnerability
his natural wolf instincts
his fear of the man-animals
his wish to please his mother