What action must be taken to expand a term from within a document?

To expand a term from within a document, highlighting the text and then right-clicking to select the "Keyword Expansion" option is the correct approach. This method allows for the immediate interaction with the specific term highlighted in the document, providing a direct avenue to gain more context or additional information related to that term.

This action typically involves accessing built-in functionalities within document management systems or review platforms that facilitate keyword analysis and provide relevant expansions for better comprehension. By selecting this functionality, users can leverage the system's ability to recognize the significance of the highlighted term and generate a broader set of related terms or concepts.

In comparison, simply typing a term into the search bar may lead to a search result but does not utilize the keyword expansion tool effectively. Opening a new window to enter the term and accessing the Analytics tab directly do not specifically address the need to expand a term within the context of the document, hence missing the opportunity to provide the desired immediate insights.