Answer:
A) Edward Thorndike
Step-by-step explanation:
Edward Thorndike was a psychologist who argued that we can shape people's behavior through the consequences these behaviors generate. For him, when a behavior is rewarded, it will be more likely to continue for a long time, but when a behavior generates a punishment it is likely to be repressed. We can see that Mary uses Thorndike concepts to encourage her son to get good grades.