How do you turn off automatic narrator on iMac?

To turn off the automatic narrator (VoiceOver) on an iMac, go to the Apple menu in the top-left corner and select "System Settings" (or "System Preferences"). Click on "Accessibility," then select "VoiceOver" from the sidebar. You can toggle it off by unchecking the "Enable VoiceOver" box or by pressing Command + F5. This will disable the screen reader feature.