An expository essay requires comprehensive research on the chosen topic and presenting the facts in a clear, concise, and organized manner. It must have a well-defined structure with an engaging introduction, logical body paragraphs, and a succinct conclusion. Additionally, the writer needs to maintain objectivity and present information without personal bias. Crafting an expository essay demands navigating these challenges of research, structure, clarity, and objectivity, which requires understanding the genre as well as mastering essay writing skills.