The phrase that describes the central idea of a text is "what a text is mostly about."
The phrase that describes the central idea of a text is "what a text is mostly about." The central idea is the main theme or topic that the text revolves around. To identify the central idea of a text, you need to carefully read and analyze the entire text and look for recurring themes or key points that are consistently mentioned throughout. Pay attention to the main arguments, main characters, or main events that the text focuses on. These will give you clues about the central idea.
