They are used to increase your overall performance and help with a consistent schedule.
If Obama is a choice, then that would be your answer.
The appropriate response is reintegration. It is the way toward reviewing a whole memory from an incomplete signal, as recollecting a discourse after hearing the initial couple of words. What's more, the inclination to rehash the reaction to a perplexing boost on later encountering any piece of that jolt.
My Answer: For someone with obsessive compulsive disorder, an action must be performed in order to alleviate anxiety associated with a recurring thought.
Hope I helped! :D