Which example describes the technique of DRI?

The technique of Differential Reinforcement of Incompatible behavior (DRI) involves reinforcing a behavior that cannot occur at the same time as an undesired behavior. In the context of the example provided, reinforcing a child for maintaining stillness during story time supports the idea of promoting appropriate behavior (stillness) while simultaneously discouraging an incompatible undesired behavior (fidgeting, moving around, or being disruptive). By rewarding stillness, you are increasing the likelihood that the child will continue this suitable behavior in future story times.

The other options do not align with the DRI technique in the same way. Ignoring a child who refuses to answer in class does not reinforce any behavior, thus not supporting an alternate, incompatible behavior. Allowing a child to complete a task without any prompts may encourage independence but does not emphasize reinforcing a specific incompatible behavior. Lastly, encouraging the removal of distractions for focus may help with attention but does not directly relate to reinforcing a compatible behavior through DRI. Overall, the correct option effectively illustrates the essence of DRI by focusing on reinforcing a behavior that serves as a substitute for an undesired one.