Which lighting effect involves a gradual transition from one scene to another?

The choice of a gradual transition from one scene to another is best described as a cross fade. This technique involves fading out the light of the first scene while simultaneously fading in the light of the next scene, creating a smooth and seamless transition. Cross fades are commonly used in theatre to ensure that the audience can comfortably adjust to the changing scenes without abrupt interruptions, enhancing the storytelling experience.

In contrast, other options represent different lighting effects that do not provide the same smooth transition. A flash fade typically refers to a quick, sharp change that does not allow for gradual blending between scenes. The strobe effect involves rapid on-off flashing lights, creating a disorienting or intense visual impact rather than a seamless transition. A quick change pertains more to rapid costume or set changes rather than lighting transitions, focusing on the speed at which performers can change appearance in alignment with staging needs. Thus, a cross fade is specifically intended for creating gradual scene transitions in lighting design.