MATCHING Identify the Letter of the Choice That Best Matches the the Phrase

MATCHING
Identify the letter of the choice that best matches the phrase or definition.
a.SGML
b.system-independent
c.XML
d.DTD
e.well-formed
f.namespace
g.XHTML
h.CDATA
i.character set
j.W3C
k.parser
l.valid
-Able to be used under almost any operating system
2.Its most widely supported version is 1.0
3.Adopted many browser extensions into the official HTML specifications
4.Language used to create the MathML and CML markup languages
5.The encoding of XHTML documents depends on it
6.Text that is not processed by the browser or parser
7.Its use is limited to those organizations that can afford the cost and overhead of maintaining its applications
8.An XML document that also contains only approved elements, attributes, and other features of the language
9.An XML document that employs the correct syntax
10.Program that checks the document for errors in syntax and content
11.A unique identifier for the elements and attributes originating from one particular language
12.A collection of rules