Which components are common to all computer systems?

The correct choice encompasses the fundamental components that are essential for all computer systems to function effectively. The processor is the central unit that performs computations and executes instructions. Memory is crucial for temporarily storing data that the processor needs to access quickly. Storage is responsible for holding data long-term, such as the operating system, applications, and files. Finally, input/output (I/O) components facilitate the interaction between the computer and the user or other systems; this includes devices like keyboards, mice, and printers.

These core components are the building blocks that enable a computer to perform its essential tasks, making them universal to all computer systems, regardless of their size or specific use cases.