Which of the following best defines a bus in computer architecture?

The definition of a bus in computer architecture focuses on its role as a communication system that transfers data between various components within a computer. A bus serves as a pathway through which data, addresses, and control signals are transmitted among the processor, memory, and peripheral devices.

This is crucial because it enables different parts of the computer system to communicate and work together efficiently. The bus can be thought of as a set of physical connections or wires, allowing multiple components to interact and share data seamlessly.

This definition emphasizes the bus's fundamental function in ensuring that data moves around the computer system as needed, facilitating operations by enabling components to send and receive information. Thus, option B accurately captures the essence of what a bus is in computer architecture.