Answer:
B. negative punishment
Step-by-step explanation:
When many of us think of discipline, our minds immediately go to punishment. The goal of punishment is to stop bad behavior such as hitting, biting, shouting or responding. Punishment is also often reactionary, which means it happens after a child has done something bad. Positive punishment is when parents add something, such as slapping or extra tasks, in response to a child's misbehavior. Negative punishment is taking something, which may include limitation of computer time or punishment.
In this case, we can conclude that when a child's parents take the opportunity for the child to eat dessert when not eating spinach, it is a negative punishment. This is because parents are taking something from the child to prevent the behavior of not eating spinach.