Final answer:
The best found copy of res gestae is most likely contained within a forensic report, as it includes detailed accounts and analyses relevant to the case, making it the most comprehensive record among the options.
Step-by-step explanation:
The best found copy of res gestae could be found in a forensic report. Res gestae refers to the events at issue in a court case, and a forensic report is a document that includes factual and detailed accounts of these events, typically prepared by experts. A forensic report is likely to contain content loaded with crucial information, accurate details, and analysis relevant to the case at hand.
While other options like witness testimony, police reports and crime scene photos are valuable, a forensic report often provides a comprehensive synthesis of all available evidence which can include or refer to these other sources making it the most complete record. Primary sources are especially important in historic and legal contexts because they offer a direct, unfiltered connection to the past or to the event being studied. Such sources are valuable for historians and legal professionals as they aim to interpret the events faithfully. Primary source examples include a diary entry by someone from the period under discussion, fossilized artifacts, medieval clothing remnants, and statutes from ancient civilizations that have been preserved.