What is defined as words or data that are added to a document?

The correct choice refers to "text," which specifically pertains to the written characters and words that comprise the primary information within a document. In the context of documents, text serves as the fundamental element that conveys ideas, messages, and information. It's the part of the document that can be read and understood by users, forming the core substance of the document's content.

While "annotations" refer to notes or comments added for clarification, explanations, or remarks, and "metadata" denotes data that provides information about other data (such as the author, date created, or file size), these terms represent supportive elements rather than the primary written content itself. "Content" can be a broader term that encompasses all forms of information within a document, not just limited to text; this could include images, graphs, and other data types. Thus, "text" is the most accurate answer to the definition of words or data added to a document.