Answer:
C. Respect for people's rights and dignity
Explanation:
It should be understood that in psychology, one of the principles to be ahered to when engaging or carrying out a research is to honor the dignity and worth of all people including each person's right to privacy, confidentiality, and self-determination. And this is done through informed consent.
Informed consent can be explained as the process of informing the participants about or regarding services, risks, benefits, costs, limits of confidentiality before they agree to becoming the participants in research.
In this case, Bernice violates this code of conduct when she felt repulsed by the participants.