Final answer:
Option C). When a patient requests their confidential data, the registry should balance state laws with patient privacy rights and consult the attending physician. Both options should be considered.
Step-by-step explanation:
There are certain actions that need to be performed when a patient requests access to their private information. The registry's rules and state laws will determine how their request is handled. The registry may give the patient direct access to the information if permitted by state law for registrars. It's crucial to let the patient's attending physician know about the request and the registry's answer, though. Thus, (c) Both (a) and (b) is the right response. In the end, informed consent and confidentiality agreements are essential components of preserving safety and trust in the patient-health professional relationship.