Which of the following is a hallmark of bait and switch advertising?

Bait and switch advertising is characterized by the practice of advertising goods that are not actually available for purchase, with the intent of attracting customers to the store. In this situation, the advertised product catches the consumer's interest; however, when they arrive, they find that the product is not available. Instead, the seller may attempt to sell them a different, often more expensive item. This tactic is deceptive and misleading, as it uses the allure of an attractive offer to draw in potential customers under false pretenses.

The other choices do not exemplify bait and switch tactics. Offering a vehicle at an advertised price implies that the product is genuinely available, while limited-time offers on existing products and discounts on all items in stock suggest legitimate sales strategies rather than deceptive advertising practices.