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AnimeBrainly
Supporting details can C. find information about the main idea.

Supporting details are supposed to support the main idea by giving facts and statistics to help back up one's claim.


hope this helps
amayacbeau
Supporting details can help you C. find information about the main idea. 
The main idea of a text is always supported by details, so by looking at the supporting details, you can find information on the main idea or topic of the text.

Hope this helps! :)