"Expert opinion" refers to the insights and judgments provided by individuals who have specialized knowledge or experience in a particular field. These experts, such as doctors, scientists, or financial analysts, use their training and background to evaluate situations, make recommendations, or offer solutions based on evidence and best practices. In various contexts, expert opinions can influence decision-making, policy development, and public understanding. For instance, in legal cases, the testimony of an expert witness can help clarify complex issues for judges and juries. Overall, expert opinions serve as valuable resources for informed choices and actions.