Which of the following represents a key test for the public interest defense in privacy cases?

The key test for the public interest defense in privacy cases is centered around whether the information is in the public interest. This means that the information must serve a broader purpose, such as contributing to public knowledge or serving as a form of accountability. In privacy law, the distinction between private and public information is crucial, and when a matter is in the public interest, it may justify the publication despite the potential for privacy intrusion.

The public interest often relates to issues that have significant societal importance, such as exposure of wrongdoing, corruption, or safety concerns. Thus, if the information meets this criterion, it may provide a legitimate defense in legal proceedings concerning privacy breaches. Other choices, such as sensationalism, celebrity status, or whether the publication was sanctioned by authorities, do not directly address the core issue of public interest in the same way that identifying the societal relevance of the information does.