What is an indicator of comprehension in a reading passage?

Identifying the main idea and supporting facts in a reading passage is a crucial indicator of comprehension because it demonstrates that the reader has grasped the essential message and key supporting details that give context and substance to that message. Comprehension involves not just understanding individual words or sentences but also the ability to synthesize that information to understand the overall theme or argument being presented.

When a reader can pinpoint the main idea, they show their ability to discern the writer's primary focus and the evidence or facts that bolster that idea, which are essential for a deeper understanding of the text. This skill is fundamental for engaging critically with the content, drawing conclusions, and applying what has been learned to other contexts or discussions. In contrast, the other options, such as identifying figures of speech, memorizing vocabulary, or analyzing sentence structure, may be helpful skills in reading but do not directly reflect a reader's ability to comprehend the overall meaning of a passage.