What type of evidence involves witness testimony?

The type of evidence that involves witness testimony is direct evidence. This type of evidence is the most straightforward and consists of statements made by witnesses who have observed an event or have direct knowledge of a fact. When a witness testifies about what they saw or heard, this constitutes direct evidence as it directly supports or refutes a claim without needing any inference or presumption. For example, if a witness testifies that they saw a person commit a crime, that testimony serves as direct evidence that can support a case significantly.

In contrast, circumstantial evidence relies on an inference to connect it to a conclusion of fact, such as finding a suspect's fingerprints at a crime scene, which suggests they may have been there but does not directly prove they committed a crime. Indirect evidence is similar in nature to circumstantial evidence, as it also requires additional reasoning to establish a connection to the matter in question. Cumulative evidence, on the other hand, consists of multiple pieces of evidence that corroborate one another but does not specifically refer to witness testimony. Therefore, direct evidence is key when considering the role of eyewitness accounts in legal contexts, making it the correct answer.