What role does the CPU play in computer architecture?

The CPU, or Central Processing Unit, is often referred to as the brain of the computer. Its primary function is to execute instructions from programs, which involves performing calculations and processing data. The CPU carries out the basic arithmetic and logical operations necessary for all operations in a computer system, managing the execution of commands that control hardware and software.

In performing these tasks, the CPU interacts with memory, retrieves instructions and data, processes them, and then sends results back to memory or to output devices. This ability to process instructions efficiently and effectively is fundamental to the performance of any computer. Without the CPU's role in executing calculations and managing processing tasks, the computer would not be able to function as intended, making it the core component of computer architecture.

In contrast, the other options describe functions that are supportive to the operation of a computer but do not capture the primary purpose of the CPU itself. For instance, storing data is a function typically associated with memory and storage devices, while handling output devices pertains to the roles of peripheral components. Connecting to the internet involves network interfaces, which are outside the direct function of the CPU. Thus, the correct answer reflects the central and essential duty of the CPU in the broader context of computer architecture.