Final answer:
The author uses a descriptive text structure in the excerpt from 'Leviathan', with the battle being just pretend as indicated by everyday objects representing battlefield elements. This structure immerses the reader in the vividly depicted scene.
Step-by-step explanation:
The text structure used by the author in the excerpt from Leviathan by Scott Westerfeld is A descriptive. This is evidenced by the detailed descriptions of the setting, characters, and objects, painting a vivid picture for the reader. The clue in the passage that suggests the battle is just for pretend is B a letter opener, an ink jar, and a line of fountain pens, as these are everyday objects used to represent elements of a battlefield, indicating a play battle or a child's imagination at work rather than a real one.
The author likely used this text structure to immerse readers in the fictional world, making them visualize and feel the tense atmosphere of the battle scene. By providing detailed descriptions, the author enhances the reader's experience and captures their attention, creating a memorable and engaging narrative.