你的客戶有許多常客，希望你協助他們觸及日後可帶來最高轉換收益的消費者。你會如何建議他們運用智慧出價來達成目標？

The correct answer is to advise the client to leverage historical purchase data and optimize for Lifetime Value (LTV). This is because LTV directly addresses the client's goal of reaching consumers who will generate the highest conversion revenue in the future. By optimizing for LTV, Smart Bidding algorithms can identify and target users who are likely to make repeat purchases and spend more over time, rather than just optimizing for a single conversion event. Using a cost-benefit management system (Option A) is too general and doesn't directly leverage Smart Bidding for future revenue. Focusing on prospecting for new buyers (Option B) might bring in new customers, but it doesn't specifically target those with the highest future revenue potential. Adding Smart Creatives like Responsive Search Ads (Option D) improves ad relevance and performance but doesn't directly optimize for the long-term value of customers.