To answer this question, you need to understand the W3C's XSLT standard and its major elements. Let's go through each option to understand why it is correct or incorrect:

Option A) XQuery - XQuery is a separate language used for querying XML data. It is not a major element in the XSLT standard, so this option is incorrect.

Option B) XPath - XPath is a major element in the XSLT standard. It is a language used to navigate and select nodes in XML documents. XPath expressions are commonly used in XSLT transformations to specify the source and destination of data. Therefore, this option is correct.

Option C) XPointer - XPointer is a separate W3C recommendation that provides a framework for addressing parts of an XML document. While XPointer can be used in conjunction with XSLT, it is not a major element in the XSLT standard, so this option is incorrect.

Option D) XLink - XLink is another separate W3C recommendation that provides a way to create and manage hyperlinks in XML documents. While XLink can be used in conjunction with XSLT, it is not a major element in the XSLT standard, so this option is incorrect.

The correct answer is B) XPath. This option is correct because XPath is a major element in the XSLT standard and is used extensively in XSLT transformations.

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• Wrong explanation

To answer this question, you need to understand the concept of XPath axes. XPath axes are used to navigate through the elements and nodes in an XML document.

Let's go through each option to understand why it is correct or incorrect:

Option A) following - This option is a valid XPath axis. The "following" axis selects all the nodes that come after the current node in the document order.

Option B) followed - This option is not a valid XPath axis. There is no "followed" axis in XPath, so this option is incorrect.

Option C) ancestor - This option is a valid XPath axis. The "ancestor" axis selects all the ancestors of the current node.

Option D) attribute - This option is a valid XPath axis. The "attribute" axis selects all the attributes of the current node.

The correct answer is B) followed. This option is not a valid XPath axis because there is no "followed" axis in XPath.

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• Wrong explanation