The correct answer is D. Expert Testimony
Step-by-step explanation:
The word "evidence" refers to information that is used to prove a point, especially in argumentative speeches or text in which the position or claim of an author is explained and supported through evidence. Besides this, evidence can be of different types and therefore contain different information this includes statistics that includes numerical data about events; anecdotal evidence that includes personal experiences; public opinion that includes the opinion of people in general; and expert testimony in which someone considered as an expert on the field or subject gives his/her point of view or opinion which is used as information that proves or explains the main point of the writer or speaker and that is generally believed by the audience as an expert is consider as reliable. Therefore, from the options provided the type of evidence in which an authority on the subject gives his opinion is Expert Testimony.