A thesis statement is one sentence that expresses the main idea of a research paper or essay. It tells the reader what to expect from the rest of the paper. It usually appears at the conclusion of the introductory paragraph.
A topic sentence is a sentence that tells the reader what a paragraph will be about. It's the most important sentence of a paragraph, and it's usually its first sentence.
When we compare these two definitions, we can see that the purpose of topic sentences and a thesis statement is similar - to summarize and reveal to the readers what a piece of writing (an essay/paper or paragraph) will be about. This is why we can say that the given statement is true.
