Answer: d) Sustainability
Explanation:
Sustainability is the method that states about maintaining the stage of any process at particular level.This helps in achieving the current goals and fulfilling the requirement without obstructing the future goals that are to be achieved.
Other options are incorrect because corporate-social sustainability is maintenance of sustaining factors in corporate field with regards to social contacts .Economic sustainability is related with economical field.
Carbon foot print is generation of green house gases in environment due to human activities that is measured in carbon dioxide's equivalent tons.
Thus, the correct option is option(d).