Your question is incomplete, but i will give a general overview that should help you get the right answer
When a claim is made, it means that a statement was made which needs to be validated with supporting details.
Therefore, in conclusion, supporting details or evidence is needed in order to defend a reasoning or a claim.
For example, an author can make a claim that of a class of three hundred students, over two hundred of them offer mathematics.
Therefore, he would bring a supporting evidence showing this statistics to prove that his claim is valid.
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