What is The main point or central idea that a writer states and then endeavors to prove?

The main point or central idea that a writer states and then endeavors to prove is often referred to as the thesis statement. This statement encapsulates the writer's primary argument or perspective on a topic, serving as a roadmap for the reader. Throughout the text, the writer provides evidence, examples, and reasoning to support and validate this central claim, guiding the reader toward a clear understanding of the argument being made.