What is a key detail in a text?

A key detail in a text serves to reinforce or clarify the main idea or argument presented. The correct choice highlights that a key detail is specifically a point that strongly supports the meaning of the text, providing evidence or insight that enhances understanding. This detail typically contributes essential information that connects to the overarching theme or message, allowing readers to grasp the text's core more effectively. In contrast, the other options do not hold this significance; for instance, they might introduce irrelevant facts or concepts that do not add value to the text’s primary arguments. Understanding the role of key details is crucial for deeper comprehension and analysis of written works.