Read this excerpt from White Fang.

At last [White Fang’s] nose touched the canvas. He waited. Nothing happened. Then he smelled the strange fabric, saturated with the man-smell. He closed on the canvas with his teeth and gave a gentle tug. Nothing happened, though the adjacent portions of the tepee moved. He tugged harder. There was a greater movement. It was delightful. He tugged still harder, and repeatedly, until the whole tepee was in motion.

How is White Fang’s character developed in this excerpt?

through interaction with another character
through interaction with the setting
through a plot conflict
through the author’s opinion