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

White Fang’s character in this excerpt is developed through interaction with the setting.

Explanation:

The novel White Fang tells us a story of a wolf-dog who is treated badly by its owner, but then he is saved by a man named Weedon Scott. Eventually, these two became friends.  

In the given excerpt, we get the description of a White Fang`s exploring of the tepee, which is a Native American tent made of skin or canvas.  

Setting unites time, place, surroundings, everything that makes the scene complemented. So, White Fang's playful act with the canvas on a tepee represents interaction with the setting.

it the climax in the poem

the apollo program, also known as project apollo, was the third united states human spaceflight program carried out by the national aeronautics and space administration (nasa), which succeeded in landing the first humans on the moon from 1969 to 1972.