Passage Summary: A company looked at its own meetings and noticed that people stop being productive after 30 minutes and that having a clear schedule helps a lot. Consequently, they've decided that the best meetings are those that are scheduled and kept under 30 minutes.

Conclusion: To be as productive as possible, a meeting at this company must have a defined time limit and last no longer than half an hour.

Reasoning: Research indicates that meeting productivity drops significantly after 30 minutes and that the most successful meetings are those with established schedules.

Analysis: This is an 'Identify the Conclusion' task, so we are looking for the author's main point. The word 'then' in the final sentence serves as a conclusion indicator, signaling that the author is synthesizing the previous observations into a final recommendation. The first two sentences provide the evidence (the 30-minute drop-off and the benefit of time frames), while the final sentence combines them into a single requirement for 'maximum productivity.' Focus on the prescriptive nature of that final claim.