Final answer:
An example of legal court testimony given by an 'expert witness' is the officer's personal opinions on the case. The correct option is (a).
Step-by-step explanation:
An example of legal court testimony given by an "expert witness" is a. The officer's personal opinions on the case. Expert witnesses are individuals who have specialized knowledge, skill, experience, or education in a particular field.
They are called upon to provide factual information, analysis, or opinions that can help the court in understanding complex issues or interpreting evidence.
The officer's personal opinions would not be considered expert testimony as it does not meet the criteria of specialized knowledge in a particular field.