According to the types of opinion, which group specifically consists of individuals with specialized knowledge?

The group that consists of individuals with specialized knowledge is expert opinions. Expert opinions are derived from professionals who possess expertise in a particular field, often gained through education, training, and experience. These individuals can provide insights or assessments that go beyond the general understanding available to someone without that specialized knowledge. Expert opinions are critical in legal contexts, as they can help clarify complex issues, such as technical matters in engineering, medicine, or economics, which may be necessary for a case to be correctly evaluated.

In contrast, lay opinions are based on the perceptions and beliefs of individuals without specialized knowledge, general opinions tend to reflect broader, non-expert views or common knowledge, and common perceptions are typically informed by societal norms rather than specific expertise. Thus, the distinction of expert opinions lies in their foundation on deep, specialized knowledge, allowing them to contribute valuable insights to various disciplines, including law.