What is the main function of a search engine?

A search engine primarily functions to locate specific information on the Internet. It achieves this by indexing web content and allowing users to input search queries. When a user types a keyword or phrase, the search engine processes this request, retrieves relevant results from its indexed database, and presents a list of web pages that match the search criteria. This makes it an essential tool for navigating the vast amount of information available online, enabling users to find the exact data or content they need.

The other options, while related to computing and the Internet, do not reflect the primary purpose of a search engine. Storing files pertains to data storage services, creating websites relates to web development tools, and enhancing network security involves cybersecurity measures. These functions serve different objectives and do not align with what search engines are designed to do.