Which epigraph best supports the author's purpose in showing that family dynamics are complex?

A. "The dominant primordial beast was strong in Buck, and under the fierce conditions of trail life it grew and grew. Yet it was a secret growth. His newborn cunning gave him poise and control."
-Jack London, The Call of the Wild

B. "I wanted movement and not a calm course of existence. I wanted excitement and danger and the chance to sacrifice myself for my love. I felt in myself a superabundance of energy which found no outlet in our quiet life."
-Leo Tolstoy, "Family Happiness"

C. "There was some books.... One was Pilgrim's Progress, about a man that left his family, it didn't say why. I read considerable in it now and then. The statements was interesting, but tough."
-Mark Twain, The Adventures of Huckleberry Finn

D. "To the desert go prophets and hermits; through deserts go pilgrims and exiles. Here the leaders of the great religions have sought the therapeutic and spiritual values of retreat, not to escape but to find reality."
-Paul Shepard, Man in the Landscape: A Historic View of the Esthetics of Nature