What is the likely benefit of using a dimmer in a performance?

Using a dimmer in a performance primarily offers the ability to allow for adjustments in lighting intensity. This is crucial in stagecraft as it enables the lighting designer or technician to modify the brightness of lights according to the changing needs of a scene. For instance, a dimmer can help create mood or atmosphere by gradually altering the light levels to fit specific moments in the performance, such as transitioning from a bright, energetic scene to a darker, more dramatic one. This flexibility contributes significantly to storytelling in theater, as lighting can influence the audience's perception and emotional response to the action on stage.

Other options, while they touch on different aspects of performance, do not directly relate to the primary function of a dimmer in stage lighting design.