What is a charge government places on a business for emitting pollution?

The 1991 Persian Gulf War demonstrated that UN

collective security efforts are possible, at least in cases of clear-cut interstate aggression where major powers contribute the necessary resources.

"Policy practice” refers to:

a. Clinical practice in policy settings. b. Efforts to change policies in legislative, agency and community settings. c. A series of class exercises meant to establish an understanding of policy. d. A case application of political actions.