What defines the 'main idea' in a text?

The main idea in a text is fundamentally characterized by the author's primary position or argument related to the topic. This central concept serves as the foundation upon which the entire text is built, guiding the reader's understanding of the content's purpose and direction. The main idea encapsulates the essence of what the text conveys, helping to clarify the author's intent and the primary message being communicated.

While the general subject matter provides a backdrop for understanding what the text is about, it does not convey the author's specific point of view or argument. Supporting details serve to substantiate the main idea but are not the main idea itself. An underlying theme might reflect broader insights or messages within the text, but it often requires interpretation beyond the surface narrative and does not directly articulate the author's main argument or position.