一間代理商的行銷人負責管理一家食品外送公司的應用程式廣告活動，他們推出一個廣告活動來吸引新使用者。以下何者是最理想的出價策略，有助客戶達成目標？

Target Cost Per Install (tCPI) is the most ideal bidding strategy because the agency's goal is to attract new users, which directly translates to app installs. tCPI allows the agency to set a target cost for each new app installation, and Google Ads automatically optimizes bids to achieve as many installs as possible within that target. Cost Per Click (CPC) focuses on clicks, not necessarily installs. Cost Per Mille (CPM) optimizes for impressions, which doesn't guarantee user acquisition. Target Return On Ad Spend (tROAS) is for maximizing revenue and is typically used for in-app purchases or subscription models, not initial user acquisition.