In a , the number of responses needed for reinforcement differs from time to time and it produces a very steady rate of response, because the individual is not quite sure how many responses are necessary to obtain reinforcement.

Variable-ratio

Explanation:

Variable-ratio -

It refers to the type of schedule reinforced , where the response is implemented after the unforeseeable responses , is referred to as the variable ratio .

In this schedule a very high and steady rate of responding is generated .

The delivery schedule unpredictable .

Hence , from the given scenario of the question ,

The correct answer is variable - ratio .

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