Respuesta :
The right answer for the question that is being asked and shown above is that: "B. Duke is on a variable-interval schedule of reinforcement." Duke is practicing his spelling in the classroom. Duke is going to receive reinforcement after six demonstrations of the target behavior.
The correct answer is C. Duke is on a fixed-ratio schedule of reinforcement.
Fixed refers to the delivery of rewards on a consistent schedule. Ratio refers to the number of responses that are required in order to receive reinforcement. So in this example, the fixed-ratio schedule is that a reward will be delivered for every sixth correct spelling made by Duke.