Stating a motion for a recess correctly is essential to ensure clarity and adherence to parliamentary procedure. The correct choice specifies the duration of the recess, which is required when making such a motion. By saying "Madam President, I move to take a __ minute recess," the speaker clearly communicates both the intention to pause the meeting and the exact length of that break. This specificity allows members to understand how long the recess will last and helps facilitate proper planning for the continuation of the meeting.
In contrast, the other options lack the necessary specificity regarding the duration of the recess. Saying "call for a break" or "request a short pause" does not give members a clear timeframe and can lead to confusion about how long the meeting will be suspended. Additionally, the phrase "move to stop all discussions for a time" is ambiguous and does not conform to established parliamentary language, making it less effective for the purpose of formally addressing the assembly. Therefore, the correct answer emphasizes the importance of clarity and formality in parliamentary motions.