Which definition is utilized when extensive detail is required about a term?

The most fitting definition for a scenario that requires extensive detail about a term is an expanded definition. An expanded definition goes beyond a simple explanation and includes comprehensive information such as the term's origins, context, examples, and its relevance or applications. This type of definition is useful when readers may need a deeper understanding of the concept, ensuring clarity and thoroughness.

In contrast, a sentence definition typically provides a brief, concise explanation that may suffice for straightforward or commonly understood terms but lacks the depth required for more complex subjects. A report supplement refers to additional material attached to a report, which might not focus specifically on defining terms. An appendix, on the other hand, generally contains supplementary information or data that supports the main content but is not specifically about defining terms in detail. Each of these alternatives serves different purposes, with the expanded definition uniquely tailored to offer the in-depth exploration needed for a detailed term explanation.