The correct answer is C. Is part of the executive branch
Step-by-step explanation:
In politics, an independent regulatory agency is a type of organization or agency whose main purpose is to supervise and regulate certain aspects of government, these are called independent because they do not influence politics. Although they are usually considered part of the executive branch as they still deal with the government and they enforce the law. Examples of this type of agencies include the Consumer Product Safety Commission or the Food and Drug Administration, that are permanent agencies that regulated and supervise law. Thus, it can be concluded an independent regulatory agency is part of the executive branch.