What is 'ad copy'?

For Dr. Juda, ad copy would represent the actual information that one is viewing on google.com when looking at an ad. It's everything that you're seeing between the word 'sponsored ' for both Charlie and Barb's ads. And in the case of Deb, the ad copy would be everything beneath the word 'sponsored' but above the word 'Enterprise rent a car' within the organic results. So all the text you see in this instance would be the ad copy, along with the image of a vehicle in the first ad.