Final answer:
A default Goo gle Analytics session expires after 30 minutes of inactivity, but this length can be adjusted by the user within their Analytics settings.
Step-by-step explanation:
By default, a Goo gle Analytics session expires after 30 minutes of inactivity. A session is defined as the period during which a user is actively engaged with a website, app, etc. If a user leaves a site and returns within 30 minutes, the session is continued. If they return after 30 minutes of inactivity, a new session begins. Users can adjust this length in the settings of their Analytics account, with options ranging from 1 minute to 4 hours.