Historically, works are classified in the Library of Congress classification system under which broad category?

• A. The broad category designated by the letter A
• B. The broad category designated by the letter B
• C. The broad category designated by the letter C
• D. The broad category designated by the letter D

Answer: (D)

In the Library of Congress Classification system, books are grouped by broad subjects that are marked with letters. The broad category that covers historical topics is the one designated by the letter for history. So historical works belong to that history category (the D designation). This is why the correct choice is that broad category. Within that broad group, librarians use finer subdivisions for specific eras, regions, or themes, but the overarching category for historical works is the history designation.