你經營的小公司有一個網站，以及兩個分別適用於 iOS 和 Android 裝置的應用程式。如果你的目標是跨這三者分析事件和使用者，該如何設定帳戶？

The correct answer is "一項資源再加上三個資料串流，一個用於網站，兩個分別用於 iOS 和 Android 應用程式" (One property with three data streams: one for the website, and two for the iOS and Android apps, respectively). In Google Analytics 4 (GA4), a single property is designed to unify data from various platforms (website, iOS app, Android app) to provide a comprehensive, cross-platform view of user behavior. To achieve this, you create separate data streams within that single property for each platform. This setup allows for integrated analysis of events and users across all three platforms. The incorrect options suggest using multiple properties or an insufficient number of data streams, which would either fragment the data or prevent a complete cross-platform view.