In Windows OS, when you delete an item from any of the drives by making use of the 'Delete' key or even by simply right-clicking and selecting the 'Delete' option, the item is moved to ________.

Which service of an operating system manages the allocation of hardware resources such as main memory, CPU cycles, and file storage to different users or tasks in a multi-user environment?

Identify the operating system from the following options that is primarily designed for mobile devices rather than standard desktop computers or laptops.