What is the primary role of a thesis statement in an essay?

The primary role of a thesis statement in an essay is to introduce the topic and assert the main argument. A thesis statement serves as a roadmap for the reader, outlining the central idea or position that the essay will explore and defend. It helps readers understand what to expect in the following paragraphs and guides the direction of the entire essay. By clearly articulating the writer's stance, the thesis statement sets the stage for the supporting arguments and evidence that will follow. This clarity is essential for effective communication and helps to keep the essay focused on its main objective.

The other options do not align with the fundamental purpose of a thesis statement. Summarizing the ending of the essay or providing examples are functions that come later in the writing process, while concluding the discussion relates to the essay's conclusion rather than its introduction.