What type of evidence is based on the opinions of experts in a field?

The correct answer is based on the understanding that opinion evidence is specifically focused on the perspectives and interpretations provided by qualified individuals who possess specialized knowledge in a certain area. This type of evidence is valuable in legal and professional contexts because experts can provide insights that go beyond the understanding of an average person. They analyze and interpret data, conduct evaluations, or assess situations based on their extensive training and experience, which can help guide decisions or judgments in a case or matter at hand.

In contrast, testimonial evidence refers to firsthand accounts or statements made by witnesses about what they have seen, heard, or experienced. Documentary evidence involves written or recorded documents that provide factual information and tangible proof, such as contracts, reports, or emails. Physical evidence consists of tangible objects that can be presented in court or an investigation, like fingerprints, weapons, or other forensic material. Therefore, while all these types of evidence contribute to understanding a case, opinion evidence uniquely emphasizes expert assessments which may influence outcomes based on specialized knowledge rather than mere fact or observation.