Answer:
variable-ratio
Step-by-step explanation:
Variable-ratio schedule: In psychology, the term "variable-ratio schedule" is described as one of the different reinforcement schedules of the operant conditioning theory which was proposed by B. F. Skinner.
It is described as a reinforcement schedule in which a specific response is being "reinforced" after every unpredictable or unforeseeable number of responses. Variable-ratio schedule ought to create a high and steady responding rate.
In the question above, the given statement states that Jeremy's behavior is being reinforced on a variable-ratio schedule.