Final answer:
The ethical principle specifically relevant to being a good psychologist is upholding the best interests of the client, which aligns with the principle of beneficence. This includes ensuring the well-being and fair treatment of clients, obtaining informed consent, maintaining confidentiality, and practicing value neutrality.
Step-by-step explanation:
The ethical principle relating to being a good psychologist is c) Upholding the best interests of the client. This principle is part of the broader principle of beneficence, which suggests that actions should be taken with the intent to benefit others. In psychology as well as other fields where human participants are involved, such as medicine and research, ethical principles like beneficence, autonomy, nonmaleficence, and justice guide professional conduct to ensure the well-being and fair treatment of clients and participants.
Beneficence in particular emphasizes the value of contributing to the wellbeing of clients, ensuring that their interests are at the forefront of therapy or research. Moreover, upholding ethical standards includes obtaining informed consent from participants, ensuring confidentiality, rigorously adhering to research protocols, and maintaining value neutrality in the interpretation of study results, as pioneered by sociologist Max Weber.