Final answer:
The introductory paragraph of an expository essay is critical as it sets the stage for the topic to be explained, providing necessary context and a roadmap of the key points to be discussed in the essay.
Step-by-step explanation:
Role of the Introduction in Expository Essays
The introductory paragraph in an expository essay serves a crucial role in setting the stage for the reader. Its primary function is to introduce the topic or issue that will be further explored within the essay. For instance, if an essay discusses the experience of attending school on a train, the introduction might provide necessary context or background to help the reader understand the subject better before delving into more detailed explanations.
In this scenario, it seems the introductory paragraph is meant to set the foundation for the topic rather than offering a chronological account, presenting a problem and its solution, or explaining travel logistics for students on trains in detail. By laying out this foundation, the introduction serves as a roadmap for the rest of the essay, identifying key sub-points or arguments that will be expanded upon in the body.