Read the two excerpts from The Call of the Wild. The wolf whirled about, pivoting on his hind legs after the fashion of Joe and of all cornered husky dogs, snarling and bristling, clipping his teeth together in a continuous and rapid succession of snaps.

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For the better part of an hour the wild brother ran by his side, whining softly.

Which statement is true?

The wolf is static because he changes from worried to excited.
The wolf is static because he remains the same in both situations.
The wolf is dynamic because he remains the same in both situations.
The wolf is dynamic because he changes from frightened to comfortable.