Virginia Code § 38.2-503 prohibits unfair or deceptive advertising in insurance, including Accident and Sickness policies. Terms like “reductions” (option A), “exclusions” (option B), and “pre-existing conditions” (option C) are factual policy features that must be disclosed clearly under Virginia Administrative Code 14VAC5-41-10 et seq., ensuring transparency. However, “unlimited benefits” (option D) is misleading if untrue, as all policies have limits (e.g., maximum benefits or coverage caps). Advertising “unlimited benefits” without substantiation violates Virginia’s rules against exaggerated or false claims, risking consumer deception. The study guide likely warns against such terms, citing examples where insurers faced penalties for overstating coverage, making D the prohibited choice.