An advertiser has strict goals for its consideration campaigns and cannot exceed a $2.12 cost per click (CPC). Which bid strategy should the advertiser use?

The advertiser should use a Custom bid strategy because it allows them to manually set a maximum bid for each click, ensuring they do not exceed their $2.12 CPC goal. This provides precise control over costs. Automatic bid strategies optimize for the best results within the budget but do not guarantee a specific CPC, potentially exceeding the $2.12 limit. Lifetime budgets and Daily budgets are budget-setting options that control the total spend over a campaign's duration or per day, respectively, but they do not directly control the cost per click. While budgets are essential, the bid strategy is what directly influences the CPC.