Which of the following is NOT a guideline for commission meetings?

The guideline that is not appropriate for commission meetings is the notion of prior discussion among commissioners only. Transparency is a key principle in public meetings, which are intended to promote openness and allow for public engagement. This means that discussions about matters to be deliberated in commission meetings should occur in the presence of the public, rather than exclusively among commissioners beforehand.

The other options align with the basic requirements for conducting commission meetings. For instance, closed sessions can occur, but they typically require a majority vote to ensure that such sessions are warranted and transparent. Allowing public attendance is essential to promote accountability and give constituents a chance to observe and participate in the democratic process. Lastly, an advance notice requirement ensures that the public is informed about when meetings will take place, giving them the opportunity to attend and engage with the proceedings.

Thus, the correct answer emphasizes the importance of open communication and public involvement in the decision-making process of a commission.