Move the people into the "high" box or the "low" box. Click the stop sign to stop a sound. Click the flag to reset.
I updated the code so that it would play the correct or incorrect sound when you move the people to the boxes. I also fixed some glitches by swapping out some of the "play audio" blocks for "Start audio" blocks. I also added some "Stop audio" at the beginning of each person's code so you don't experience overlapping tracks playing at the same time.