A. The Great Depression was the worst economic event in U.S. history.
Explanation:
The thesis statement is the part of an essay that tells the reader in a short ans concise way what the paper is about. It captures the main idea the author wants to transmit the audience, therefore it shows his/her position towards the chosen topic. The thesis statement is found in the introduction and is easily recognized because it presented in a very specific sentence. Here sentence A. gives us a glimpse of the following paragraphs' content.
