Final answer:
Private Mode is a browsing feature that prevents the saving of user's history, cookies, and site data, useful for maintaining privacy especially on shared computers.
Step-by-step explanation:
The 'Private Mode' on the home page is a feature found in web browsers and some applications that allows a user to browse the internet without storing information about which sites and pages the user has visited. When you activate Private Mode, the browser doesn't save your browsing history, cookies, site data, or information entered in forms. Search histories, downloads, and bookmarks created during a private browsing session may still be saved, however. This feature is particularly useful when you are using a shared or public computer and you don't want others to see your browsing activity. It's important to note that Private Mode doesn't make your browsing completely anonymous on the internet; your internet service provider, employer, or the websites you visit can still track your activity.