How is a "bounce" defined in Google Analytics?

In Google Analytics, a "bounce" is specifically defined as a single-page session in which the user leaves the site without triggering any other interactions or events. This means that if a visitor lands on a webpage and then exits without clicking on any links, submitting forms, or otherwise engaging with the page, it is counted as a bounce. This metric is important because it helps webmasters understand user engagement; a high bounce rate may indicate that users are not finding the content relevant or engaging enough to explore further.

The other options highlight different aspects of session behavior but do not align with the definition of a bounce. For instance, a session where a user visits multiple pages indicates engagement and is the opposite of a bounce. A session lasting longer than 30 seconds could still include a bounce if no further interactions occur, and a session involving multiple users doesn't pertain to the individual interaction behavior needed to define a bounce. Thus, the clarity and specificity of the definition for a bounce center around the single-page aspect and the lack of additional interactions.