You are a screener at an airport. You must screen many passengers. But, this job is really boring because you usually don't find anyone carrying dangerous objects. So, to keep your motivation up your supervisor decides to ask some passengers to carry a
knife in their pockets. Your supervisor is using which of the following schedules of reinforcement to maintain your motivation?
Select one:
O a fixed interval
O b. variable interval
C. variable ratio
d. fixed ratio