Attach a copy of each ad to the report.
This makes it sound like they want a section written about each add, and they want a copy of the ad submitted WITH the paper.
However, many nice papers have images pasted right into the paper, centered. Right click the image and you will see an option to add a caption (if you are working in Microsoft Word).
Most importantly, ask the teacher about this. You should always feel free to communicate with teachers about this sort of thing.