What is the maximum duration before a grand jury must be held?

A grand jury must generally meet within a specified timeframe to ensure timely legal proceedings. The correct answer is based on the requirement that a grand jury must be convened within 21 days following a request for its formation. This timeline helps maintain the balance between the rights of defendants and the state's interest in prosecuting criminal activities.

This 21-day rule allows for a straightforward and efficient response in the legal system, ensuring that cases are not unnecessarily delayed. Moreover, it guarantees that the matters requiring grand jury review are handled promptly, thereby promoting an effective judicial process. Other durations, such as 10, 30, or 45 days, do not align with the legal standards set for grand jury convening timelines, which can lead to potential issues of delay and justice being denied.