What instrument is used to maintain order during a meeting?

The instrument used to maintain order during a meeting is the gavel. The gavel is a small ceremonial mallet typically made of wood, and it serves a specific function in formal meetings or assemblies, particularly in legislative bodies, clubs, and other organized groups. It is used by the presiding officer to call the meeting to order, signal transitions between different segments of the meeting, and ensure that the proceedings are conducted in an orderly manner. Its sound is a physical cue that captures the attention of attendees and helps to maintain focus.

In contrast, the other options serve different roles. The flag often symbolizes the group's identity or mission, the notebook is a tool for note-taking, and the bell may indicate the start or end of a session but does not actively maintain order like the gavel does. Thus, the gavel is the recognized and most effective instrument for preserving decorum and ensuring that meetings proceed smoothly.