Answer:
The correct answer D.
Explanation:
The professional psychological association established some ethical regulation known as The APA ethics code that is an essential ethic code for psychological researchers to work.
It has many standards related to the clinical practice of psychology but main concerned ethical standard are taking consent, no use of non-primates and cat or dogs as animal subject and other like debriefing, deception and many other. It allows subjects like rats or mice for clinical purposes.
Thus, the correct answer is an option - D.