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The answer would be c or a
Kelsey's dad might (laugh).
Hope this is helpful :)
Answer:
The Premack principle
Explanation:
Given by David Premack in 1965.
This principle is based on Operant Conditioning (reinforcement).
The Premack principle states that the chance of getting involved in more predictable activities or behaviors will reinforce less predictable activities or behaviors.
In the given eg. Jean is applying reinforcement, as he asked her daughter that she can play outside after eating fruits.
