What term is used for a must behavior that is enforced by the governing?

The term that refers to mandated behavior enforced by governing bodies is "laws." Laws are formal rules established by governmental institutions that outline what is permissible and what is not within a society. They are created to maintain order, protect individual rights, and ensure justice. When laws are enacted, they carry the authority of the government, meaning that they can be enforced through legal penalties if violated.

In contrast, regulations are specific rules set by governmental agencies but are based on laws. Guidelines provide recommendations and standards but are typically not legally enforceable. Customs refer to established beliefs or practices within a culture but do not have the formal enforcement mechanism that laws possess. Therefore, laws are the correct choice because they are the binding rules that must be followed under the authority of governing bodies.