Final answer:
The last step of prewriting when writing an essay is developing an outline, which organizes the writer's ideas and forms a structured plan for writing. The correct option is D. developing an outline.
Step-by-step explanation:
When writing an essay, the last step of prewriting is typically developing an outline. Outlining serves as a crucial phase where the writer organizes their ideas and sets a structured plan for the essay. It is undertaken once a solid topic has been chosen, research questions have been formed, and a preliminary thesis established.
This step is important because it helps the writer see the connection between different ideas and ensures that evidence logically supports the thesis statement throughout the essay. A well-prepared outline can simplify the writing process, as it guides the essay's structure and flow.
Outlining involves listing the major points and subpoints in a logical order, hence ensuring the essay will have a clear and effective structure. A strong outline will reflect a clear understanding of the topic and provide a roadmap for the writer to follow, including carrying the research further if necessary. After developing an outline, the writing process becomes more focused and efficient, aligning with the intended argument or analysis.