Answer:
-They are the most important ideas in a text.
-They are supported by details.
-They can be explicitly stated or implied.
Explanation:
The central idea of any text can simply be stated as the main idea of what the text is talking about. It is the main point that the author would like to or want to make in his work.
While the central or main ideas of any work may not be explicitly stated by the author, at times it is upon the readers to find and see what that main idea is. These central ideas are the most important ideas in the text. but they cannot be an important point unless there are some useful details supporting that idea. Also, these main ideas are always and can be stated explicitly or implied.
