Final answer:
The given section from Stephen Crane's "A Great Mistake" falls under the exposition of the plot structure.
Step-by-step explanation:
The given section from Stephen Crane's "A Great Mistake" falls under the exposition of the plot structure. In a plot structure, the exposition introduces the characters, setting, and initial conflict. In this section, the focus is on the baby and the Italian, which sets up the conflict of the story.
Learn more about Plot structure in literature