A ular NPR radio show encourages listeners to solve a puzzle each week. If they have the correct answer and send it into the show and theirs is chosen, they win a prize. This is an example of a.

A ular NPR radio show encourages listeners to solve a puzzle each week. If they have the correct answer and send it into the show and theirs is chosen, they win a prize. This is an example of a. 




A. premium
B. sweepstakes
C. deal
D. contest
E. trade promotion


Answer: D


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