First I allowed the test subjects to view the poster by itself. After asking the first three questions I showed the subjects my first options: Footprints leading to the poster and a pamphlet. Both provide information about reducing a carbon foodprint.
After the viewer was exposed to the information behind the poster I showed them my next three options: a scale in a grocery store, shopping paper bag that provided information on what to buy and a shopping cart with information on what to buy.
After my testing I have decided to use the Footprints and Paperbag as my two articles.