Question

Most search sites use a ____， a software program in conjunction with a huge database of information about web pages to help visitors find web pages that contain the information they are seeking.

Answer 1

Most search sites use a search engine.

A search engine refers to a general class of programs that search and identify items from a huge database of information corresponding to certain keywords or characters specified by the person seeking for a particular information usually from web pages and sites on the World Wide Web.