Which of the following is a toggle option available on the floor plan view?

The toggle option available on the floor plan view is airwalls. Airwalls are movable partition walls used in venues to create flexible spaces. This feature within the floor plan view allows users to modify the layout by adding or removing airwalls, which can significantly change the dimensions and configurations of a room according to the needs of the event.

In contrast, chair colors, room temperature, and lighting settings, while relevant to event planning and venue setup, are not features that are directly adjustable within the floor plan view of Cvent's diagramming tool. These elements typically fall under the broader scope of event design and preparation rather than the specific spatial organization that the floor plan view addresses.