What effect option is commonly used to create a green screen effect?

The common effect used to create a green screen effect is known as chroma key. This technique works by allowing you to remove a specific color range from a video clip, which typically involves a bright green or blue background. Once the background color is keyed out, you can replace it with a different video or image, creating the illusion that the subject is in a different environment.

Chroma keying relies on the fact that the color you want to remove (the green screen) is distinct from the colors in the foreground subjects, allowing Premiere Pro to efficiently eliminate that color while preserving the rest of the image. This feature is essential in film and video production for special effects and compositing, as it enables seamless integration of live-action footage with virtual backgrounds.

The other options do not directly create the green screen effect. Masking may involve creating specific shapes or areas within a video but does not inherently remove a background based on color. Color correction adjusts the appearance and balance of color within a video clip but does not involve removing a background. Keyframing is a technique for animating or changing properties over time but does not specifically relate to the process of creating a green screen effect.