What is the primary role of witnesses in criminal cases?

The primary role of witnesses in criminal cases is to provide testimony that can corroborate evidence and establish facts. Witnesses bring personal knowledge and observations to the court, which can help clarify the circumstances surrounding the case. Their testimonies can help the judge or jury understand the events that took place, contributing to the fact-finding process crucial in determining the outcome of a trial. Through their narratives, witnesses can validate other forms of evidence presented, establish timelines, and offer insights into the behaviors and intentions of those involved in the incident. The accuracy and credibility of their accounts are vital for ensuring a fair trial and upholding justice.

The other options do not accurately reflect the fundamental role of witnesses. For instance, while documents can serve as evidence, it is not the responsibility of witnesses to present them; that is typically handled by attorneys or through court procedures. Witnesses are not legal representatives; rather, their role is to provide their perspectives on the events at hand. Additionally, while some expert witnesses may provide specialized opinions, most witnesses deliver factual testimony based purely on their experiences without offering professional expertise regarding the evidence itself.