Which of the following is NOT a common formation for arranging participants?

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Arranging participants in a way that keeps everyone visible, allows clear communication, and supports safe supervision is the key idea. Circle and semicircle layouts maximize eye contact and ensure instructions and demonstrations reach everyone. The L formation can help keep groups organized while preserving good sightlines for the instructor. A rectangular layout, with its corners and rigid edges, tends to create blind spots and uneven sightlines, making it harder for participants to see and hear instructions and for you to monitor the group effectively. That’s why a rectangle isn’t commonly used for briefing or instruction in these settings.