What constitutes an invasion of privacy?

An invasion of privacy refers to a scenario where an individual's right to maintain their personal affairs in a private manner is breached. This concept generally encompasses a wide array of actions that compromise an individual's autonomy over their private information or matters.

When considering the notion of privacy, it becomes evident that individuals have a fundamental right to control their personal information and maintain confidentiality over their private lives. This includes not just health data but also any information that they desire to keep from public scrutiny. Hence, an infringement upon this right—such as unauthorized access or dissemination of personal data or decisions without proper consent—constitutes a clear violation of an individual’s privacy.

In the context of the other options, while sharing medical information without consent is indeed a serious breach and can lead to implications around privacy infringement, the best answer that encapsulates the broader principle of the right to privacy is the specific recognition of violating a person's right to keep personal affairs private. The other options refer to specific actions that may relate to privacy but do not fully embody the principle as comprehensively as the correct answer.