Answer:
Negative Reinforcement
Step-by-step explanation:
The objective of negative reinforcement is to eliminate an aversive thing or situation, that is, to eradicate an unpleasant response in the subject that could bring unpleasant consequences.
In the example stated, we can see that the mother managed to produce this desired effect on the child, since she took the toys away from him for a week, in this way the child learned that he should not get angry or be rude to his mother when they are in the toy stores.