Which device would likely be used to highlight actors on stage?

A spotlight is specifically designed to illuminate a particular area or actor on stage, making it the ideal choice for highlighting performances. Spotlights focus a narrow beam of light and can be adjusted to create dramatic effects, direct audiences' attention, and enhance the emotional impact of a scene. This makes them crucial in theatrical productions where specific moments or characters need to stand out visually against the rest of the stage.

In contrast, floodlights typically provide broad, even lighting that fills large areas, making them less effective for highlighting individual actors. Ambient light serves to create a general atmosphere rather than focusing on specific elements, so it wouldn't be suitable for drawing attention to particular performances. Reflection light, while useful for creating certain lighting effects, does not provide the focused illumination necessary to highlight actors effectively.