Some "Causes" of a Social Condition Cannot Be Addressed the Community

Some "causes" of a social condition cannot be addressed the community level. Examples in the text do NOT include which of the following:

A) only national regulation can address the problem.
B) the knowledge and technology to change them are not available.
C) because the controls would not be socially or culturally acceptable.
D) many solutions are part of the society's political economy.