What term describes the supporting reason for a conclusion in an argument?

The correct term that describes the supporting reason for a conclusion in an argument is "premise." In logical reasoning, a premise serves as the foundation or basis upon which a conclusion is drawn. It provides the evidence or reasons that lead to the conclusion, helping to justify why the conclusion should be accepted as valid.

Using premises effectively is crucial in constructing sound arguments because they outline the rationale behind a specific viewpoint or assertion. Each premise contributes to the overall strength of the argument by providing support and clarity.

In contrast, an assertion is a statement made without the necessary support or evidence, a conclusion is the final judgment or decision that follows from the premises, and an example illustrates a point but does not serve as the supporting reason itself.