Which statement best describes the purpose of keyword expansion?

• A. To Identify Unrelated Terms
• B. To Produce Related Terms For The Original Term
• C. To Delete The Original Term
• D. To Summarize Documents

Answer: (B)

Keyword expansion is about broadening a search by adding related terms to the original term. The aim is to capture documents that discuss the same idea but use different wording, so you improve recall. For example, expanding a term like “employee” to include synonyms such as “staff,” “worker,” “personnel,” and variants like “employees” helps you find more relevant documents. It isn’t about identifying unrelated terms, deleting the original term, or summarizing documents. So the best description is producing related terms for the original term.