Which of the following promotions exemplifies the use of a fixed-ratio schedule of reinforcement? a café offers its customers a punch card. each time a patron purchases a beverage, a hole is punched; when ten holes are punched, the patron receives a free beverage. a café offers each patron an early morning two-for-one free-beverage-with-purchase deal from 5 to 6 a. m. on monday mornings. a café prints "you are a winner" on a random one-twelfth of its coffee lids; patrons receiving such a lid can redeem it for a free beverage. now and then, a café announces a two-for-one deal.