Answer:
The correct answer is expert testimony.
Step-by-step explanation:
The testament made by a competent individual regarding a technical, scientific, or skilled issue is considered as expert testimony. An expert is generally considered to testify because of his or her knowing with the matter or possessing unique training in the field.
To be considered, expert testimony must comprise specified knowledge and must aid the trier of information. The opinion of the expert needs to effectively authorize by sound method and reason. At the same time it needs to be significant to the facts at issue.