What is one of the major legal encyclopedias mentioned?

The correct answer, Corpus Juris Secundum, is one of the most comprehensive and authoritative legal encyclopedias in the United States. It serves as a significant resource for legal research, providing detailed summaries of state and federal laws. This encyclopedia organizes legal principles by topic, making it easier for legal professionals and researchers to find relevant information about various areas of law.

In contrast, other options like Westlaw and LexisNexis are primarily legal research databases that provide access to case law, statutes, regulations, and secondary sources, but they are not encyclopedias themselves. American Jurisprudence, while also a well-known legal encyclopedia, is typically regarded as a competitor to Corpus Juris Secundum, highlighting that there are different resources available, but Corpus Juris Secundum is specifically designated as a major legal encyclopedia.