Readers can identify a detail that supports a central idea in an informational text by looking for phrases, words, or sources/information that seem to relate to one idea or can be applicable to an idea.
Explanation:
For example, the central idea of "history repeats itself" can be found in an informational text that shows proof, such as the author/writer displaying an event in the past, and a recent event that while not the same, has similar circumstances or causes.
