What term best describes evidence that strengthens or confirms a statement or theory?

The term that best describes evidence that strengthens or confirms a statement or theory is "corroborate." This word specifically refers to the act of providing additional support or verification to an argument or claim, enhancing its credibility. In the context of law enforcement and investigative procedures, corroborating evidence plays a crucial role in substantiating facts or testimonies, leading to a more coherent understanding of events or findings.

The other terms do not carry the same meaning in this context. "Refute" indicates disproving or contradicting a statement, thus working against the idea of strengthening a claim. "Discern" relates to the ability to perceive or recognize something, which does not specifically imply confirmation or support. "Articulate" refers to expressing an idea clearly and effectively rather than providing evidence that supports or confirms a given theory. Therefore, "corroborate" is the most accurate choice for describing evidence that reinforces a statement or theory.