To identify the central idea of a text, readers must notice keywords and details. Thus the correct answer is C.
What is a central idea in the text?
The concept serves as the narrative's organizing theme and connects all of the other fictional devices the author uses to tell the story is referred to as the central idea.
The detail of the text provides information about the events of the text. With the help of keywords, readers can understand what is happening around in the story.
Therefore, option C is appropriate.
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