Final answer:
The literary term used in nonfiction prose that provides proof or evidence for what is being said is support.
Step-by-step explanation:
The literary term used in nonfiction prose that provides proof or evidence for what is being said is support. Support refers to the evidence, examples, or facts that are used to back up or validate the main ideas or claims in a nonfiction text. It helps to strengthen the author's argument and make it more convincing to the reader.
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