The correct answer is All of these.All of the above are search engines.Search Engines:These are websites available on the Internet that provide information on any topic the user wants to search.Search engines contain a program that collects information from other websites.The information is then stored according to the category it belongs to, e.g. websites about music will be stored in a category named Fine Arts.Examples of popular search engines are Yahoo, Bing, and Google.Google:Founders: Larry Page, Sergey BrinCEO: Sundar PichaiHeadquarters: California, USAYahoo:Founders: Jerry Yang, David FiloHeadquarters: California, USABing:It is a search engine created by Microsoft.