Which propaganda technique is illustrated by suggesting a product is essential for maintaining quality?

The propaganda technique that involves suggesting a product is essential for maintaining quality is best illustrated by the concept of "Passing from the Acceptable to the Dubious." This technique relies on the idea that once a notion has been categorized as acceptable, the argument can be crafted to lead audiences to more dubious conclusions without proper justification. By framing a product as essential for quality, it implies that lacking the product results in inferior quality, which is a leap made without sufficient evidence. This manipulation creates a sense of necessity around the product, encouraging consumers to believe they need it to ensure quality, although that need may not be substantiated.

The implications of this for marketing are that consumers may feel compelled to purchase items under this premise, even if the claim lacks a solid foundation, thereby showcasing the effectiveness of this particular propaganda technique.