The statement that you would not see in a formal proof is: B.) a conclusion.
A formal proof can be defined as a proof where by logical conclusions has been known to be true after reaching a conclusion or after linking the hypotheses to the conclusion that has been reached.
Formal proof tend to make use of deductive reasoning when connecting the hypothesis to the conclusion reason been that in deductive reasoning conclusion depend on premises that are presume to be true.
In mathematics formal proof are often used to express the logical inference of a conclusion.
Therefore the correct statement that you would not see in a formal proof is: B.) a conclusion.
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