Final answer:
The sentence 'Creating an outline of the presentation' best matches the student's step in her presentation preparation because it helps organize main ideas and details effectively, considering the audience and the rhetorical situation.
Step-by-step explanation:
The sentence that best matches a step the student is taking in preparing her presentation is 'Creating an outline of the presentation.' This step is crucial as an outline serves as a framework for organizing the main ideas, supporting details, and evidence that will be presented. Moreover, the outline ensures a natural flow of ideas and establishes a foundation for engaging the audience effectively. To maximize the impact, the student should define the rhetorical situation, gather ideas, draft a thesis statement, and create an organizational plan. It's also important to consider the audience and the purpose of the presentation throughout this process.