How often do extensions update"?

Chrome checks for extension updates periodically when the browser is running. This check typically happens within the first few minutes of launching Chrome and then again every few hours. While updates are triggered by developers publishing to the Chrome Web Store, the actual update on the user's browser happens when Chrome is active and performs these periodic checks. Option A is incorrect as extensions generally don't update when Chrome is not running. Option C describes a manual update process, which is not the default behavior. Option D is incorrect because the update on the user's end is dependent on Chrome being active and checking for updates.

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