What is the purpose of a subpoena?

A subpoena serves as a legal document that mandates an individual to appear at a legal proceeding, such as a court trial or deposition, or to produce certain documents relevant to a case. This process ensures that witnesses and relevant parties fulfill their obligations to participate in the legal process, either by testifying or by providing documents that may be crucial for the proceedings.

The importance of a subpoena lies in its role in enforcing compliance with the law, allowing for the collection of evidence and testimony necessary for the judicial system to function effectively. By compelling the presence of a witness or the provision of documents, the legal process can be upheld, ensuring that all pertinent information is considered during a case.

The other options, while related to the legal process, do not accurately capture the primary function and intent of a subpoena. Providing evidence or informing a jury pertains to different aspects of legal proceedings, while advising witnesses of their rights is a separate responsibility often associated with legal counsel or court officials.