What does a subpoena require of an individual?

A subpoena is a legal document that commands an individual to appear in court or to produce evidence relevant to a legal proceeding. This makes the option indicating the requirement to appear in court or produce evidence the correct choice.

Subpoenas serve as essential tools in the legal process, compelling witnesses to provide testimony or documents that could be crucial for a case. The enforcement of this requirement is significant in ensuring that the judicial process can access all necessary information to reach a fair and equitable outcome.

The other options address different legal or civic responsibilities. For example, reporting to law enforcement does not fit the specific function of a subpoena, and jury duty is a civic obligation mandated separately from a subpoena. Compliance with a plea agreement refers to the conditions set in negotiations between the defendant and the prosecution, which is also distinct from the function of a subpoena.