What is the definition of 'material evidence'?

Material evidence is defined as evidence that helps establish the truth of a claim by proving a previously unproven fact. In the context of veteran claims and appeals, material evidence is critical because it can directly affect the outcome of a case. For instance, in a claim for disability benefits, presenting new medical records that demonstrate a service-related injury or condition would qualify as material evidence, as it substantiates the veteran's claim and can influence the decision-making process of the reviewing authority.

Other options do not align with the definition of material evidence. Evidence that is readily available to the public does not necessarily contribute to proving a specific fact related to a claim. Similarly, evidence submitted by other claimants may not pertain to the individual veteran's situation and thus wouldn’t hold the same probative value. Lastly, the cost of obtaining evidence does not determine its materiality; material evidence can sometimes be free or costly, but its significance lies in its ability to support the merits of a claim rather than its availability or procurement cost.