Mr. McDonald is reinforcing students help seeking behavior on a differential rate of low responding schedule.
Behavior modification can be defined as a process that involves reinforcing desired behaviors in a person or group of people, while withholding reinforcement for undesired behaviors.
This ultimately implies that, Mr. McDonald is reinforcing students help seeking behavior on a differential rate of low responding schedule by ensuring they ask him for help after they have attempted solving the geometry problems.
Read more on positive reinforcement here: https://brainly.com/question/10579224
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