Final answer:
The term 'regulation' refers to the written rules of acceptable behavior, serving as guidelines for expected conduct in various contexts, including organizations and societies.
Step-by-step explanation:
The word that means the written rules of acceptable behavior is regulation. These rules or regulations stipulate the norms and expectations for behavior within a specific context, like an institution or society at large. For example, a code of conduct is a type of regulation that outlines the expected behavior of members within an organization. Similarly, cultural sanctions are a way society regulates behavior to conform to accepted norms. In the context of a legislative body, the rules structuring debate might be called parliamentary procedures, which are specific types of regulations.