Respuesta :
Overall, Marcel's economic decisions benefit the goal of efficiency by "3. contributing to the nation's productivity," since this is a "win win" for both the nation and for Marcel.
I believe the answer is: 3. contributing to the nation's productivity
Nation's productivity is measured by calculating the amount of values that its people give through the creation of goods or services.
When Marcel worked in city hospital, he provided services that would increase the nations' productivity.