<span>The question says,'which one of the following statement about a topic sentence and a main idea is accurate. The correct option is A. A topic sentence is a sentence which expresses the main idea of the paragraph in which it occur. It is the most important sentence in a paragraph and it is the focus of the paragraph in whic it exists. The main idea of a write up is the overarching theme of that write up, it is usually stated in a single sentence called the thesis statement. </span>
