Which term describes the official notice that informs members of a meeting?

The term that best describes the official notice that informs members of a meeting is the "Call of a meeting." This term specifically refers to the formal process of notifying members about the details of an upcoming meeting, including the time, place, and agenda. It is an essential component of parliamentary procedure and organizational governance, ensuring that all members are adequately informed and have the opportunity to participate.

The other options, while related to the communication of meeting details, do not capture the formal and specific nature that "Call of a meeting" conveys. A meeting schedule refers more to a timetable of upcoming meetings rather than the notice itself. An announcement could be too broad or informal for this context, not necessarily indicating that it is an official notification. A notification letter, although it implies a formal communication, does not carry the specific connotation of the procedural aspects tied to the official notice of convening a meeting.