Final answer:
The most important conflict among the characters in 'Lord of the Flies' is the struggle between civilization and savagery.
Step-by-step explanation:
In "Lord of the Flies," the most important conflict among the characters is Civilization vs. Savagery. The novel explores the tension between the boys' efforts to maintain a sense of order and civility on the island, represented by Ralph and Piggy, and their descent into violence and primal instincts, embodied by Jack and his tribe. This conflict highlights the fragility of civilization and the human capacity for darkness.