Answer:
Experiencing a sense of accomplishment.
Explanation:
The personal rewards are associated with the intrinsic motivation as these rewards encourage the individual internally(in the form of pleasure or gratification) to perform effectively and efficiently.
As per the given description, the 'experience of a sense of accomplishment' that is reflected by Sun-Jun's personal satisfaction that he wishes to share with his team(by taking them out for lunch). This intrinsic motivation will not only keep Sun-Jun himself as well as his team motivated but also encourage them to perform more productively.
