What are supporting details? a.) pieces of information that support the main idea b.)words that restate the main idea c.) the details before the conclusion in a paragraph d.) the words that describe action

Supporting details are pieces of information that support the main idea, therefore the answer is A. 

Your answer is A pieces of information that support the main idea because supporting paragraphs are usually put in a essay to help support your claim like why do you think this is wrong? or why don't you agrees with this statement? you put the supporting details in their from a reliable source to help the reader understand your opinion also its not C because its can be before the conclusion but you can also put it in your conclusion for extra data its not B because A thesis helps you restate your main idea or a chicken foot and when it came down to rather A or D I choose A because some supporting details support an action but some of them don't.                                                                                              Your answer is A.