Answer: b) a breach of confidentiality.
Explanation: Restricted or private information may be deemed as confidential and as such, the information should not flow, be seen or be heard outside the sphere of those who are authorized. A breach of confidentiality therefore occurs, when private data or restricted information gets into the hands of an unauthorized individual. In the scenario above, patients medical record and HIV status are meant to be private and not disclosed to third parties. However, with the theft of a laptop contain a database with thses information, means it has made it's way into the hands of a third party, and therefore such incident constitutes breach of confidentiality.