Final answer:
To make an existing HTML 4.01 Web page code easily adaptable to XML technologies, Ellen can start by making the necessary changes to the markup language used.
Step-by-step explanation:
To make an existing HTML 4.01 Web page code easily adaptable to XML technologies, Ellen can start by making the necessary changes to the markup language used. HTML is a markup language that defines the structure and presentation of web content, while XML is a markup language that focuses on describing and organizing data.
Ellen can begin by replacing the HTML tags with appropriate XML tags, such as <element> for HTML <div>. She should also ensure that the document follows the rules and syntax of XML. For example, XML requires closing tags for all elements and the use of attributes in a specific format.
By making these changes, Ellen will be able to transition her web page code from HTML 4.01 to XML, making it compatible with XML technologies.