Answer and explanation:
Sender: Target creates a Back-to-School Campaign 
 
Transmitter Encodes: Advertising agency creates print ad 
 
Communication Channel: Ad runs on local Sunday newspaper 
 
Receiver Decodes: Melissa buys the paper and plans to go shopping for her children's supplies 
 
Feedback: Store traffic increases 
 
Target is the maker of the Campaign and intends to create an advertisement to communicate its offering hence it is the Sender. The Advertising agency, upon Target’s intentions, create the print ad, hence encodes the same as Transmitter. The channel of communication so chosen is that of the Newspaper hence ad runs on Sunday newspaper. The receiver is the target audience, here, Melissa who decodes and acts upon the same by going for shopping for her children’s supplies. The feedback is given by way of increase in Store traffic by the Target audience.