Explanation: Perl, .NET, and PHP are examples of the application programming interface (API). API is a set of routines, protocols, and tools that users can use to work with a component, application, or operating system. It consists of one or more DLLs that provide specific functionality. API helps in reducing the development time of applications by reducing application code. Most operating environments, such as MS-Windows, provide an API so that programmers can write applications consistent with the operating environment. Answer: A is incorrect. HTML stands for Hypertext Markup Language. It is a set of markup symbols or codes used to create Web pages and define formatting specifications. The markup tells the Web browser how to display the content of the Web page.