Who rules on all questions of parliamentary procedure affecting the assembly's proceedings?

The chair plays a critical role in parliamentary procedure as the individual responsible for maintaining order during meetings, ensuring that discussions follow established rules, and facilitating the decision-making process. The chair interprets parliamentary rules and guidelines, making authoritative decisions on procedural matters as they arise during discussions. This is essential for the assembly's proceedings, as it helps to prevent confusion and uphold the structure of the meeting.

While other members may contribute to discussions or propose motions, and the majority may influence decisions through voting, it is the chair who has the final say on questions of parliamentary procedure. The secretary, on the other hand, is typically responsible for keeping records and minutes of the meetings but does not have decision-making authority regarding procedural issues. Thus, the chair is the correct answer as the ruling authority on all questions of parliamentary procedure affecting the assembly's proceedings.