When you are talking to someone special at a party you are able to focus on the voice of that person and screen out the background noise This is an example of which law of perceptual organisation?

This ability to focus on a specific voice while ignoring background noise is an example of the "figure-ground" principle of perceptual organization. It illustrates how we can distinguish between a focal stimulus (the person’s voice) and the surrounding distractions (the party noise), allowing us to concentrate on what is most relevant to us in that moment.