What action can a Magento Admin user take to disable an extension?

Disabling a module in Magento can be accomplished through the "Disable Modules Output" action. This specific action allows an administrator to deactivate the frontend output of a specific module without having to fully uninstall it. This is useful for when you may want to keep the module present within the system while not actively using it or when troubleshooting issues caused by that module.

"Disable Modules Output" is particularly advantageous when you want to quickly turn off a module's functionality while retaining the option to enable it later without requiring reinstallation or additional configuration. This control is especially beneficial in scenarios where a module might be causing conflicts, and a temporary disabling is needed for resolution.

Other actions like "Remove Modules Output" and "Disable System Configuration" do not correspond to properly disabling a module's functionality. "Uninstall Module," while effective at completely removing a module’s files and configurations, is a more permanent solution that may require additional steps to reinstate the module if needed later. Therefore, the ability to simply disable the output allows for a more flexible and manageable approach.