Which document provides interpretive support for individuals or entities affected by rules?

The Washington Administrative Code (WAC) serves as the correct answer because it provides the detailed rules and regulations that interpret and clarify statutes created by the Washington State Legislature. The WAC allows individuals and entities to understand how to comply with laws and the specific requirements they need to follow. It addresses various aspects, including public health, safety, and welfare, which are crucial for professionals in fields such as dental hygiene.

The WAC encompasses administrative rules that regulate how laws are implemented and enforced on the ground level. Therefore, for anyone seeking guidance or clarifications on rules that affect their professional responsibilities or rights, the WAC functions as an essential resource.

Other documents mentioned, such as the Legislative Action Form, generally facilitate the legislative process but do not provide interpretive support. The State Constitution outlines fundamental principles and the framework for governance but does not delve into detailed regulatory guidance. Lastly, a Government Accountability Office Report focuses on auditing and evaluation of government performance rather than offering interpretative legal guidance or support related to specific rules.