What advertising strategy emphasizes reliability and trust in a product?

The strategy that emphasizes reliability and trust in a product is most effectively represented by expert endorsement. This approach relies on the credibility of a knowledgeable figure, such as a professional or an authoritative expert in a relevant field, to vouch for the product's quality and effectiveness. The presence of an expert can enhance consumer confidence because it suggests that the product has been evaluated and approved by someone with significant experience or education. This method is particularly powerful in technical and health-related markets, where consumers are more likely to seek validation from recognized authorities rather than judging based solely on emotional triggers or personal anecdotes.