Private browsing is the correct answer because this feature allows you to use an internet browser without leaving traces such as cookies, browsing history, and temporary files on the computer. It’s especially useful on public or shared computers to help protect your personal information. 'Deactivate client-side scripting' would not hide your browsing history or downloaded files. 'Browser add-ons/extensions' could potentially help with privacy but are not designed to automatically delete browsing history or downloaded files after a session. 'Proxy settings' might mask your IP address but would not prevent the local storage of browsing data.