Which of the following describes the CPU's function?

The function of the CPU, or Central Processing Unit, is fundamentally to process input and execute instructions. It acts as the brain of the computer, interpreting and executing complex sequences of operations based on the instructions provided through software applications. The CPU retrieves data from memory, processes it according to the instructions, and then outputs the result. This involves performing calculations, comparisons, and logical operations.

In contrast, the other options describe functions that are not primarily the role of the CPU. While storing data is a critical function of memory devices, it is not the CPU's primary job. Managing the power supply is typically handled by the power supply unit or power management components within the computer system, rather than the CPU itself. Controlling network connections is the responsibility of network interface cards or related hardware, rather than the CPU, which focuses on processing tasks. Thus, the understanding of the CPU's primary role directly aligns with its function of processing input and executing instructions.