What combination of actions is sufficient to prevent a website from recording a user's browsing history?

The choice that states no combination is completely sufficient is accurate because even implementing multiple privacy measures may not fully prevent a website from recording browsing history. Websites can use various tracking mechanisms beyond just cookies, including browser fingerprinting, session tracking, and local storage. Logging out of an account, disabling cookies, or restarting the browser may limit tracking to some extent, but they do not eliminate all potential data collection methods employed by websites.

For instance, logging out of an account stops a specific user session from being tied to an account, but the website may still log IP addresses and other identifiable information. Disabling cookies can prevent certain types of tracking, but many sites rely on other technologies to track users. Restarting the browser might clear session data, but it cannot erase previous tracking or prevent websites from identifying users through other methods.

Thus, while individual actions can improve privacy, the complexity of web tracking means that no single or combination of actions guarantees complete prevention of a user's browsing history from being recorded.