The story was set primarily in ______.

A．The novel focused upon the experiences of a dog named Buck.
B．The main theme was to tell its readers the life in the arctic wild.
C．The book stressed the influences of environment on character.
D．Creatures have to adapt to the changes on environment to survive.

A．The Call of the Wild is about the relationship between men and dogs in the arctic.
B．The Call of the Wild is a story about the wild west during the Gold Rush.
C．Buck learned "the law of club and fang" by defeating its enemies.
D．Buck managed to survive and became a leader.