Which seating arrangement is least effective for visual aid presentations?

The least effective seating arrangement for visual aid presentations is the circle arrangement. In a circle, the focus is primarily on the center where the facilitator or visual aid might be located, but this setup does not allow for easy visibility of visual aids such as slides or boards, especially if they are positioned at a distance or in front of the room. Participants seated in a circular manner may find it challenging to view presentations that are meant to be more front-focused, which diminishes their ability to engage fully with the materials being presented.

On the other hand, arrangements like the lecture or U-shape facilitate better sightlines for viewing visual aids placed at the front, ensuring that all participants can see presentations clearly. The cluster arrangement, while allowing some interaction, also enables good visibility of visual aids, similar to U-shape and lecture formats. Hence, while each arrangement can serve certain purposes, the circle arrangement is the least effective specifically for visual presentations due to potential obstructions and difficulty in maintaining focus on the visual material.