Answer:
XML (Extensible Markup Language):
Step-by-step explanation:
XML (Xtensible Markup Language):
It is a markup language that is used for creating web-pages, it defines a set of rules that makes it readable both to humans and machine.
XML was primarily designed to be a software and hardware independent tool and it's focus was on data. XML provides a framework for defining markup languages.
XML, HTML and XHTML are all related to each other because they are all markup languages and can be used to build websites.
Basically,
-HTML is primarily for web-pages.
-XML is primarily for data.
-XHTML is a standard based on HTML that follows the strict rules of XML.