<span>Option A, the search engine is the way to get information on the internet through a web browser, installed on an operating system of a computer. It is software that gathers all the information and stores it to accelerate the search for the users by entering the data of the desired information.</span>
I think the answer is the third one...
The public WiFi your school utilizes can see your log in activities, even if you erased the history, be careful