XML namespace specification in an XML document is important because

Question $5$ options:

$1)$

It promotes standardization of names for XML elements and attributes

$2)$

It avoids naming conflicts for XML elements and attributes from different types of XML documents

$3)$

It enforces more meaningful names for XML elements and attributes

$4)$

It allows a program to automatically download the XML Schema file for the XML document with the URI associated with the prefix of the namespace