Which style guide is commonly used in legal documents, including court transcripts?

The Bluebook: A Uniform System of Citation is the correct answer because it is specifically tailored for legal writing. This comprehensive guide provides rules for citing legal documents, cases, statutes, and other legal sources, making it an essential resource for court reporters, attorneys, and law students. Its focus on clarity and consistency in citation within the legal field helps ensure that legal documents are easily understood and properly formatted according to established standards.

In contrast, other style guides like The Chicago Manual of Style, the APA Style Guide, and the MLA Handbook are designed for academic, journalistic, and general writing purposes. While they may touch on citation practices, they do not address the specific needs and requirements of legal document formatting, making them less suitable for court transcripts and legal publications.