It would be all of the above because all these things benefit and need the water.
Answer:
In this scenario, Greg's actions exemplify social loafing.
Explanation:
Greg's action are exemplifying the term social loafing. In social psychology, social loafing is used to refer to individuals who, when working in groups, exert less effort. It offers an explanation as to why some groups can be inefficient. There are people who present this tendency to not work hard when they know others are working. They are less effective and productive when working in a group than they are when working by themselves and when they are responsible for their own results and productivity.
I think your answer is D.) Labor Unions although if this is incorrect please let me know so I can research more on the subject.