Question

what is the purpose of incognito mode? to prevent tracking of history to block all advertisements to make internet faster to improve download speeds

Explanation:

Incognito mode in browsers is designed to stop the browser from saving browsing history, cookies, and site - data. It helps in preventing tracking of one's online activities by others who use the same device. It does not block ads, speed up the internet, or improve download speeds.

Answer:

To prevent tracking of history