In terms of relevance, what determines whether evidence is appropriate for an argument?

The appropriateness of evidence in relation to an argument is chiefly determined by how it bears on the argument’s conclusion. Evidence must directly support the claims being made for it to be considered relevant. If the evidence does not connect logically to the conclusion, it becomes ineffective regardless of its detail, recency, or the audience's prior knowledge.

For instance, relevant evidence strengthens the case being made and provides a foundation for reasoning, making the argument more persuasive. Therefore, the primary measure of whether evidence is suitable for an argument hinges on its relationship to the argument's conclusion. If the evidence clearly relates and enhances understanding of the conclusion, it is deemed appropriate and effective in the context of that particular argument.