The four forms of evidence include which of the following?

• A. Rumor
• B. Belief
• C. Demonstrative
• D. Opinion

Answer: (C)

Demonstrative evidence is used to illustrate or clarify facts by presenting information in a visual or tangible form, such as charts, graphs, photos, timelines, or models. This type of evidence helps the decision-maker understand the factual situation by showing what the other evidence is describing, rather than proving the fact on its own. It complements testimony or documents, making complex information more accessible and easier to evaluate. Rumor, belief, and opinion are not formal forms of evidence in this sense; rumors are unverified, beliefs are subjective without factual support, and opinions by themselves don’t establish facts. So the form that best fits the concept of aiding understanding through presentation is demonstrative.