How would you define an "incident"?

Defining an "incident" often involves understanding its context in everyday language and usage. The correct choice highlights that an incident typically refers to an unexpected occurrence, especially one that carries a negative connotation, making it unpleasant. This aligns with common interpretations of the term, where an incident suggests an unforeseen event that disrupts normalcy or poses a problem.

In contrast, the other options describe different types of events that do not capture the essence of an incident. A planned event that is enjoyable or a joyful gathering implies a level of anticipation and positivity that's contrary to the unexpected nature of an incident. Similarly, a formal announcement pertains to communication about future events rather than reflecting an occurrence that has happened. Therefore, the defining characteristics of an incident—unpredictability and unpleasantness—are well represented in the selected answer.