As it pertains to shared device use cases, support for _____________ was added in Android Pie (9.0) kiosk mode.

Android Pie (9.0) enhanced kiosk mode functionality by adding support for multiple applications. This allows administrators to provision shared devices with a curated set of necessary applications, rather than restricting the device to a single app. This improves flexibility and utility for shared devices in various enterprise use cases, such as retail, logistics, or healthcare. Work profiles are designed for personal devices to separate work and personal data, not primarily for shared device kiosk modes. Multiple containers is a broader concept not specifically tied to this Android Pie kiosk mode enhancement. Multiple DPCs (Device Policy Controllers) are not a standard feature for managing a single device in kiosk mode; typically, one DPC manages a device.