Match the bidding strategy to the definition. Amazon will reduce your bids in real time for clicks that may be less likely to convert to a sale.

The correct answer is "Dynamic bids - down only" because this bidding strategy allows Amazon to adjust bids in real time by reducing them for clicks that are less likely to convert into a sale. The "down only" aspect means that while Amazon can lower the bid for certain opportunities based on the likelihood of conversion, it will not increase the bid for more promising clicks. This helps advertisers save money by preventing overspending on less likely conversions while still giving them the chance to compete for more valuable clicks. In contrast, "Fixed bids" maintain a constant bid amount, and "Dynamic bids - up and down" both increase and decrease bids based on the likelihood of conversion, making "Dynamic bids - down only" the correct option for this specific behavior.