Final answer:
The central idea of an article is expressed in the thesis statement and its placement is essential for providing structure and indicating how the text will develop. Topic sentences in each paragraph should align with this central idea, presenting a cohesive and logical argument.
Step-by-step explanation:
The central idea of an article is typically presented in a thesis statement, which provides the main ideas and indicates the order of the body paragraphs. The placement of the statement is crucial as it sets the expectation for the reader about what is to come and how the text will unfold. This initial statement usually connects the different parts of the text and clarifies how one idea supports or refutes another. The organization of the essay is often evident in the body paragraphs where each topic sentence summarizes the main argument or point of the paragraph. To determine if the statement is in the appropriate place, one should consider whether it effectively introduces the summary of the text and whether it presents a strong analysis that is supported by the subsequent paragraphs. If the thesis statement's placement does not serve this purpose, improving its position or strength is advised to enhance the reader's understanding and the overall impact of the essay.