White Fang is beginning to develop better instincts about the humans
Explanation:
The excerpt shows that White Fang was beginning to develop better instincts about humans. Instinct, is an acquired or natural tendency to evaluate a situation and know the right response to it.
In the case of White Fang above, his instinct about humans was better developed as he was able to deduce that the noise made by the man was not hostile, thereby making him come closer to him.
