Final answer:
Pressfield employs narration alteration to complicate the focalization and represent events and characters realistically and naturalistically.
Step-by-step explanation:
When comparing the way Pressfield tells the story of Alcibiades to Thucydides and Plutarch, we can see the concept of "narration alteration" at work. Pressfield complicates the narration by shifting the focalization, or the perspective from which the story is told, making it more multifaceted and nuanced. He represents events and characters more "realistically" and "naturalistically" by presenting them with complexity, flaws, and motivations that reflect the messy realities of human behavior.
In terms of realism and naturalism as modes of representation, realism refers to a faithful representation of reality, often depicting everyday life and social issues. Naturalism, on the other hand, is an extreme form of realism that emphasizes the influence of social and environmental factors on human behavior, often portraying characters as victims of biological, psychological, and societal forces beyond their control.