An ad for the BioLite CampStove $2$ Coffee Press Bundle in Outside magazine featured actress Bear Grylls and offered readers a $$10-$off coupon when they buy the stove. In terms of the communication model, the medium of this ad is $\_\_\_\_\_\_\_\_.$

Group of answer choices

Bear Grylls

Outside Magazine

Readers who redeem the $$10-$off coupon

Maybelline

The target market to whom Bear Grylls appeals