Which aspect of Mopar products is highlighted by the phrase "tell the customer what an accessory does"?

The phrase "tell the customer what an accessory does" specifically emphasizes the advantages of Mopar products. By focusing on the advantages, it informs potential buyers about the benefits and functionalities that accessories provide, helping them understand how these products can enhance their vehicle's performance or aesthetics. Highlighting advantages is essential in the sales process, as it allows customers to see the value added to their experience and vehicle. This approach aligns with effective selling techniques, where demonstrating the practical benefits of a product can lead to informed decisions and customer satisfaction. In contrast, the other options do not directly reflect the focus on positive outcomes or usefulness, which is the core intent of communicating the functionality of accessories.