According to advertising regulations, which of the following triggers full disclosure?

Full disclosure in advertising regulations is primarily triggered by the amount of payments and the finance charge. This is because financial terms are critical in helping consumers understand the full scope of the financial obligations they would incur when purchasing a vehicle. When advertisements include specific details about financing options, such as installment payments and any associated costs like finance charges, it becomes essential for the dealer to provide a comprehensive disclosure. This ensures that potential buyers are fully informed about the financial implications of their purchase, enabling them to make educated decisions.

The other options, while important, do not trigger full disclosure to the same extent. For example, while the cost of the vehicle is significant to consumers, it does not encompass the financing details that could heavily influence the total amount paid over time. The dealer's location is relevant for logistical reasons but does not impact a consumer's financial decision directly. Similarly, warranty terms are important for understanding the reliability and maintenance of a vehicle but are not as central to the financial aspects of the purchase that require full transparency in finance-related advertising.