What is the purpose of the bus in a computer system?

The bus in a computer system serves a critical role as a communication system that transfers data between different components of the computer, such as the CPU, memory, and input/output devices. By connecting various microprocessors and components on the motherboard, the bus enables these entities to communicate and exchange information efficiently.

This interconnection allows for the movement of data and instructions among the components, which is essential for the overall operation of the system. Without a robust bus architecture, the various parts of the computer would struggle to work together cohesively, significantly limiting the performance and functionality of the system.

The other options do not correctly define the bus's purpose. Storing operating system files relates to storage devices and memory, managing files and directories pertains to the file system within an operating system, and regulating power supply connects more with power management systems rather than the data communication that the bus handles.