For how long can a main motion be debated?

The ability to debate a main motion is governed by parliamentary procedure rules, which typically allow for two opportunities for members to debate the motion. Each member can speak for a duration that is often limited to 10 minutes during each of these opportunities. This structure is designed to ensure that debate remains focused and that all voices can be heard without allowing the discussion to become overly lengthy or meandering.

The limitation to two times allows for a balance between encouraging thorough discussion and maintaining the efficiency of the meeting. This ensures that the meeting progresses and allows for a clear understanding of differing viewpoints on the motion. The limited time for each person also encourages brevity and clarity in expressing opinions.

The other options do not reflect the standard parliamentary procedure. For instance, allowing one person to debate for 15 minutes could lead to monopolization of the discussion, whereas three debates of five minutes each do not align with the standard of two opportunities for debate. The option stating "for as long as needed" would potentially lead to an unmanageable and inefficient meeting, straying from structured debate principles intended to promote fairness and organization.